87749654634 has 12 divisors (see below), whose sum is σ = 190124251746. Its totient is φ = 29249884872.

The previous prime is 87749654591. The next prime is 87749654653. The reversal of 87749654634 is 43645694778.

It is a happy number.

87749654634 is a `hidden beast` number, since 8 + 77 + 49 + 65 + 463 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87684093225 + 65561409 = 296115^2 + 8097^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2437490389 + ... + 2437490424.

Almost surely, 2^87749654634 is an apocalyptic number.

87749654634 is an abundant number, since it is smaller than the sum of its proper divisors (102374597112).

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

87749654634 is a wasteful number, since it uses less digits than its factorization.

87749654634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874980821 (or 4874980818 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 63.

The spelling of 87749654634 in words is "eighty-seven billion, seven hundred forty-nine million, six hundred fifty-four thousand, six hundred thirty-four".