756664 has 8 divisors (see below), whose sum is σ = 1418760. Its totient is φ = 378328.

The previous prime is 756649. The next prime is 756667. The reversal of 756664 is 466657.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (756667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47284 + ... + 47299.

It is an arithmetic number, because the mean of its divisors is an integer number (177345).

2⁷⁵⁶⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

756664 is a deficient number, since it is larger than the sum of its proper divisors (662096).

756664 is a wasteful number, since it uses less digits than its factorization.

756664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94589 (or 94585 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 756664 is about 869.8643572420. The cubic root of 756664 is about 91.1243319216.

The spelling of 756664 in words is "seven hundred fifty-six thousand, six hundred sixty-four".