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107666247 = 3132760673
BaseRepresentation
bin1100110101011…
…01101101000111
321111121000022210
412122231231013
5210030304442
614403354503
72445101523
oct632555507
9244530283
10107666247
1155858277
1230082a33
13193c9050
1410428d83
1596bb19c
hex66adb47

107666247 has 8 divisors (see below), whose sum is σ = 154597744. Its totient is φ = 66256128.

The previous prime is 107666239. The next prime is 107666269. The reversal of 107666247 is 742666701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 107666247 - 23 = 107666239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2760673 = 107666247 / (1 + 0 + 7 + 6 + 6 + 6 + 2 + 4 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107666297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1380298 + ... + 1380375.

It is an arithmetic number, because the mean of its divisors is an integer number (19324718).

Almost surely, 2107666247 is an apocalyptic number.

107666247 is a deficient number, since it is larger than the sum of its proper divisors (46931497).

107666247 is a wasteful number, since it uses less digits than its factorization.

107666247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760689.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 107666247 is about 10376.2347217090. The cubic root of 107666247 is about 475.7292539701.

The spelling of 107666247 in words is "one hundred seven million, six hundred sixty-six thousand, two hundred forty-seven".

Divisors: 1 3 13 39 2760673 8282019 35888749 107666247