756906961 has 2 divisors, whose sum is σ = 756906962. Its totient is φ = 756906960.

The previous prime is 756906947. The next prime is 756907001. The reversal of 756906961 is 169609657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 565250625 + 191656336 = 23775^2 + 13844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-756906961 is a prime.

It is a super-2 number, since 2×756906961² = 1145816295220511042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (756900961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 378453480 + 378453481.

It is an arithmetic number, because the mean of its divisors is an integer number (378453481).

Almost surely, 2^756906961 is an apocalyptic number.

It is an amenable number.

756906961 is a deficient number, since it is larger than the sum of its proper divisors (1).

756906961 is an equidigital number, since it uses as much as digits as its factorization.

756906961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 756906961 is about 27511.9421524545. The cubic root of 756906961 is about 911.3408406589.

The spelling of 756906961 in words is "seven hundred fifty-six million, nine hundred six thousand, nine hundred sixty-one".