87683665 has 16 divisors (see below), whose sum is σ = 108028800. Its totient is φ = 68285952.

The previous prime is 87683647. The next prime is 87683719. The reversal of 87683665 is 56638678.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 87683665 - 2¹⁹ = 87159377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93921 + ... + 94849.

It is an arithmetic number, because the mean of its divisors is an integer number (6751800).

Almost surely, 2^87683665 is an apocalyptic number.

It is an amenable number.

87683665 is a deficient number, since it is larger than the sum of its proper divisors (20345135).

87683665 is a wasteful number, since it uses less digits than its factorization.

87683665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416.

The product of its digits is 1451520, while the sum is 49.

The square root of 87683665 is about 9363.9556278316. The cubic root of 87683665 is about 444.2624064338.

The spelling of 87683665 in words is "eighty-seven million, six hundred eighty-three thousand, six hundred sixty-five".