7930567657 has 2 divisors, whose sum is σ = 7930567658. Its totient is φ = 7930567656.

The previous prime is 7930567633. The next prime is 7930567663. The reversal of 7930567657 is 7567650397.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7747344361 + 183223296 = 88019^2 + 13536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7930567657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7930567598 and 7930567607.

It is not a weakly prime, because it can be changed into another prime (7930561657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3965283828 + 3965283829.

It is an arithmetic number, because the mean of its divisors is an integer number (3965283829).

Almost surely, 2^7930567657 is an apocalyptic number.

It is an amenable number.

7930567657 is a deficient number, since it is larger than the sum of its proper divisors (1).

7930567657 is an equidigital number, since it uses as much as digits as its factorization.

7930567657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8334900, while the sum is 55.

The square root of 7930567657 is about 89053.7346605969. The cubic root of 7930567657 is about 1994.1971511727.

The spelling of 7930567657 in words is "seven billion, nine hundred thirty million, five hundred sixty-seven thousand, six hundred fifty-seven".