8673431640 has 64 divisors (see below), whose sum is σ = 26210273760. Its totient is φ = 2296028160.

The previous prime is 8673431617. The next prime is 8673431677. The reversal of 8673431640 is 461343768.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8673431592 and 8673431601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247351 + ... + 280230.

Almost surely, 2^8673431640 is an apocalyptic number.

It is an amenable number.

8673431640 is an abundant number, since it is smaller than the sum of its proper divisors (17536842120).

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

8673431640 is a wasteful number, since it uses less digits than its factorization.

8673431640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527732 (or 527728 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 8673431640 is about 93131.2602727999. The cubic root of 8673431640 is about 2054.6143639712.

The spelling of 8673431640 in words is "eight billion, six hundred seventy-three million, four hundred thirty-one thousand, six hundred forty".