87907665 has 8 divisors (see below), whose sum is σ = 140652288. Its totient is φ = 46884080.

The previous prime is 87907657. The next prime is 87907709. The reversal of 87907665 is 56670978.

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

It is not a de Polignac number, because 87907665 - 2³ = 87907657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2930241 + ... + 2930270.

It is an arithmetic number, because the mean of its divisors is an integer number (17581536).

Almost surely, 2^87907665 is an apocalyptic number.

It is an amenable number.

87907665 is a deficient number, since it is larger than the sum of its proper divisors (52744623).

87907665 is a wasteful number, since it uses less digits than its factorization.

87907665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860519.

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 87907665 is about 9375.9087559553. The cubic root of 87907665 is about 444.6403945791.

The spelling of 87907665 in words is "eighty-seven million, nine hundred seven thousand, six hundred sixty-five".