87700621936 has 20 divisors (see below), whose sum is σ = 170118254592. Its totient is φ = 43799136896.

The previous prime is 87700621909. The next prime is 87700622041. The reversal of 87700621936 is 63912600778.

It is a happy number.

It is a super-2 number, since 2×87700621936² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87700621936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3184240 + ... + 3211663.

Almost surely, 2^87700621936 is an apocalyptic number.

It is an amenable number.

87700621936 is a deficient number, since it is larger than the sum of its proper divisors (82417632656).

87700621936 is a wasteful number, since it uses less digits than its factorization.

87700621936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6396768 (or 6396762 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 87700621936 in words is "eighty-seven billion, seven hundred million, six hundred twenty-one thousand, nine hundred thirty-six".