107909865 has 48 divisors (see below), whose sum is σ = 216997248. Its totient is φ = 48584448.

The previous prime is 107909861. The next prime is 107909869. The reversal of 107909865 is 568909701.

It is an interprime number because it is at equal distance from previous prime (107909861) and next prime (107909869).

It is not a de Polignac number, because 107909865 - 2² = 107909861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 107909865.

It is not an unprimeable number, because it can be changed into a prime (107909861) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18549 + ... + 23661.

It is an arithmetic number, because the mean of its divisors is an integer number (4520776).

Almost surely, 2^107909865 is an apocalyptic number.

107909865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

107909865 is an abundant number, since it is smaller than the sum of its proper divisors (109087383).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

107909865 is a wasteful number, since it uses less digits than its factorization.

107909865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198 (or 5195 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 107909865 is about 10387.9673180079. The cubic root of 107909865 is about 476.0877968715.

The spelling of 107909865 in words is "one hundred seven million, nine hundred nine thousand, eight hundred sixty-five".