756079969 has 2 divisors, whose sum is σ = 756079970. Its totient is φ = 756079968.

The previous prime is 756079957. The next prime is 756079991. The reversal of 756079969 is 969970657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544755600 + 211324369 = 23340^2 + 14537^2 .

It is an emirp because it is prime and its reverse (969970657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 756079969 - 2⁵ = 756079937 is a prime.

It is a super-2 number, since 2×756079969² = 1143313839046081922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (756079669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 378039984 + 378039985.

It is an arithmetic number, because the mean of its divisors is an integer number (378039985).

Almost surely, 2^756079969 is an apocalyptic number.

It is an amenable number.

756079969 is a deficient number, since it is larger than the sum of its proper divisors (1).

756079969 is an equidigital number, since it uses as much as digits as its factorization.

756079969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6429780, while the sum is 58.

The square root of 756079969 is about 27496.9083534859. The cubic root of 756079969 is about 911.0088111952.

The spelling of 756079969 in words is "seven hundred fifty-six million, seventy-nine thousand, nine hundred sixty-nine".