657822076968 has 128 divisors (see below), whose sum is σ = 1883924017920. Its totient is φ = 187506524160.

The previous prime is 657822076931. The next prime is 657822076973. The reversal of 657822076968 is 869670228756.

It is a junction number, because it is equal to n+sod(n) for n = 657822076899 and 657822076908.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154379958 + ... + 154384218.

It is an arithmetic number, because the mean of its divisors is an integer number (14718156390).

Almost surely, 2^657822076968 is an apocalyptic number.

It is an amenable number.

657822076968 is an abundant number, since it is smaller than the sum of its proper divisors (1226101940952).

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

657822076968 is a wasteful number, since it uses less digits than its factorization.

657822076968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6227 (or 6223 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 66.

The spelling of 657822076968 in words is "six hundred fifty-seven billion, eight hundred twenty-two million, seventy-six thousand, nine hundred sixty-eight".