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107478761 = 132635969
BaseRepresentation
bin1100110011111…
…11111011101001
321111020111010212
412121333323221
5210003310021
614355350505
72443361105
oct631777351
9244214125
10107478761
115573a425
122bbb2435
1319361900
14103ba905
15968085b
hex667fee9

107478761 has 6 divisors (see below), whose sum is σ = 116382510. Its totient is φ = 99211008.

The previous prime is 107478757. The next prime is 107478779. The reversal of 107478761 is 167874701.

It can be written as a sum of positive squares in 3 ways, for example, as 2621161 + 104857600 = 1619^2 + 10240^2 .

It is not a de Polignac number, because 107478761 - 22 = 107478757 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107478731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317816 + ... + 318153.

It is an arithmetic number, because the mean of its divisors is an integer number (19397085).

Almost surely, 2107478761 is an apocalyptic number.

It is an amenable number.

107478761 is a deficient number, since it is larger than the sum of its proper divisors (8903749).

107478761 is an equidigital number, since it uses as much as digits as its factorization.

107478761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635995 (or 635982 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 107478761 is about 10367.1963905388. The cubic root of 107478761 is about 475.4529544496.

The spelling of 107478761 in words is "one hundred seven million, four hundred seventy-eight thousand, seven hundred sixty-one".

Divisors: 1 13 169 635969 8267597 107478761