87432067656 has 64 divisors (see below), whose sum is σ = 245016187200. Its totient is φ = 28886102784.

The previous prime is 87432067643. The next prime is 87432067703. The reversal of 87432067656 is 65676023478.

It is a super-2 number, since 2×87432067656² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 1766646 + ... + 1815461.

It is an arithmetic number, because the mean of its divisors is an integer number (3828377925).

Almost surely, 2^87432067656 is an apocalyptic number.

It is an amenable number.

87432067656 is an abundant number, since it is smaller than the sum of its proper divisors (157584119544).

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

87432067656 is a wasteful number, since it uses less digits than its factorization.

87432067656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3582235 (or 3582225 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 87432067656 in words is "eighty-seven billion, four hundred thirty-two million, sixty-seven thousand, six hundred fifty-six".