87697715044 has 27 divisors (see below), whose sum is σ = 154330881523. Its totient is φ = 43604543672.

The previous prime is 87697715033. The next prime is 87697715069. The reversal of 87697715044 is 44051779678.

It is a happy number.

The square root of 87697715044 is 296138.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87697715044.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 155768307 + ... + 155768869.

Almost surely, 2^87697715044 is an apocalyptic number.

87697715044 is the 296138-th square number.

It is an amenable number.

87697715044 is a deficient number, since it is larger than the sum of its proper divisors (66633166479).

87697715044 is an frugal number, since it uses more digits than its factorization.

87697715044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 58.

The spelling of 87697715044 in words is "eighty-seven billion, six hundred ninety-seven million, seven hundred fifteen thousand, forty-four".