756669 has 4 divisors (see below), whose sum is σ = 1008896. Its totient is φ = 504444.

The previous prime is 756667. The next prime is 756673. The reversal of 756669 is 966657.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 756669 - 2¹ = 756667 is a prime.

It is a super-2 number, since 2×756669² = 1145095951122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126109 + ... + 126114.

It is an arithmetic number, because the mean of its divisors is an integer number (252224).

2⁷⁵⁶⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

756669 is a deficient number, since it is larger than the sum of its proper divisors (252227).

756669 is a wasteful number, since it uses less digits than its factorization.

756669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252226.

The product of its digits is 68040, while the sum is 39.

The square root of 756669 is about 869.8672312485. The cubic root of 756669 is about 91.1245326362.

The spelling of 756669 in words is "seven hundred fifty-six thousand, six hundred sixty-nine".