756680999 has 4 divisors (see below), whose sum is σ = 801191664. Its totient is φ = 712170336.

The previous prime is 756680987. The next prime is 756681007. The reversal of 756680999 is 999086657.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 756680999 - 2²⁸ = 488245543 is a prime.

It is a super-2 number, since 2×756680999² = 1145132268495276002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (756680699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22255307 + ... + 22255340.

It is an arithmetic number, because the mean of its divisors is an integer number (200297916).

Almost surely, 2^756680999 is an apocalyptic number.

756680999 is a deficient number, since it is larger than the sum of its proper divisors (44510665).

756680999 is a wasteful number, since it uses less digits than its factorization.

756680999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44510664.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The square root of 756680999 is about 27507.8352292579. The cubic root of 756680999 is about 911.2501430764.

The spelling of 756680999 in words is "seven hundred fifty-six million, six hundred eighty thousand, nine hundred ninety-nine".