87645668974 has 16 divisors (see below), whose sum is σ = 138423196800. Its totient is φ = 41505780024.

The previous prime is 87645668969. The next prime is 87645669017. The reversal of 87645668974 is 47986654678.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142194 + ... + 442165.

It is an arithmetic number, because the mean of its divisors is an integer number (8651449800).

Almost surely, 2^87645668974 is an apocalyptic number.

87645668974 is a deficient number, since it is larger than the sum of its proper divisors (50777527826).

87645668974 is a wasteful number, since it uses less digits than its factorization.

87645668974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588327.

The product of its digits is 487710720, while the sum is 70.

The spelling of 87645668974 in words is "eighty-seven billion, six hundred forty-five million, six hundred sixty-eight thousand, nine hundred seventy-four".