7630643256 has 32 divisors (see below), whose sum is σ = 20198762640. Its totient is φ = 2393927168.

The previous prime is 7630643249. The next prime is 7630643281. The reversal of 7630643256 is 6523460367.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9350871 + ... + 9351686.

Almost surely, 2^7630643256 is an apocalyptic number.

It is an amenable number.

7630643256 is an abundant number, since it is smaller than the sum of its proper divisors (12568119384).

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

7630643256 is a wasteful number, since it uses less digits than its factorization.

7630643256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18702583 (or 18702579 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 42.

The square root of 7630643256 is about 87353.5531961923. The cubic root of 7630643256 is about 1968.7340381795.

The spelling of 7630643256 in words is "seven billion, six hundred thirty million, six hundred forty-three thousand, two hundred fifty-six".