679764 has 24 divisors (see below), whose sum is σ = 1630048. Its totient is φ = 220320.

The previous prime is 679753. The next prime is 679781. The reversal of 679764 is 467976.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 679764.

It is an unprimeable number.

679764 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 7 ways as a sum of consecutive naturals, for example, 322 + ... + 1209.

2⁶⁷⁹⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

679764 is an abundant number, since it is smaller than the sum of its proper divisors (950284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679764 is a wasteful number, since it uses less digits than its factorization.

679764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1573 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The square root of 679764 is about 824.4780166869. The cubic root of 679764 is about 87.9264192092.

The spelling of 679764 in words is "six hundred seventy-nine thousand, seven hundred sixty-four".