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107191669 = 138245513
BaseRepresentation
bin1100110001110…
…01110101110101
321110200220022211
412120321311311
5204420113134
614345253421
72441054104
oct630716565
9243626284
10107191669
1155563762
122ba94271
1319291030
141034403b
159625764
hex6639d75

107191669 has 4 divisors (see below), whose sum is σ = 115437196. Its totient is φ = 98946144.

The previous prime is 107191663. The next prime is 107191697. The reversal of 107191669 is 966191701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 966191701 = 1795397719.

It can be written as a sum of positive squares in 2 ways, for example, as 13972644 + 93219025 = 3738^2 + 9655^2 .

It is a cyclic number.

It is not a de Polignac number, because 107191669 - 27 = 107191541 is a prime.

It is a super-2 number, since 2×1071916692 = 22980107806011122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107191663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4122744 + ... + 4122769.

It is an arithmetic number, because the mean of its divisors is an integer number (28859299).

Almost surely, 2107191669 is an apocalyptic number.

It is an amenable number.

107191669 is a deficient number, since it is larger than the sum of its proper divisors (8245527).

107191669 is an equidigital number, since it uses as much as digits as its factorization.

107191669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8245526.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 107191669 is about 10353.3409583574. The cubic root of 107191669 is about 475.0292414131.

The spelling of 107191669 in words is "one hundred seven million, one hundred ninety-one thousand, six hundred sixty-nine".

Divisors: 1 13 8245513 107191669