7896656620 has 12 divisors (see below), whose sum is σ = 16582978944. Its totient is φ = 3158662640.

The previous prime is 7896656617. The next prime is 7896656653. The reversal of 7896656620 is 266566987.

It is a happy 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, 197416396 + ... + 197416435.

It is an arithmetic number, because the mean of its divisors is an integer number (1381914912).

Almost surely, 2^7896656620 is an apocalyptic number.

It is an amenable number.

7896656620 is an abundant number, since it is smaller than the sum of its proper divisors (8686322324).

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

7896656620 is a wasteful number, since it uses less digits than its factorization.

7896656620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394832840 (or 394832838 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The square root of 7896656620 is about 88863.1342008597. The cubic root of 7896656620 is about 1991.3507003963.

The spelling of 7896656620 in words is "seven billion, eight hundred ninety-six million, six hundred fifty-six thousand, six hundred twenty".