679667252 has 24 divisors (see below), whose sum is σ = 1299436320. Its totient is φ = 308489760.

The previous prime is 679667251. The next prime is 679667269. The reversal of 679667252 is 252766976.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 679667252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679667251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20303 + ... + 42089.

It is an arithmetic number, because the mean of its divisors is an integer number (54143180).

Almost surely, 2^679667252 is an apocalyptic number.

It is an amenable number.

679667252 is a deficient number, since it is larger than the sum of its proper divisors (619769068).

679667252 is a wasteful number, since it uses less digits than its factorization.

679667252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22511 (or 22509 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 50.

The square root of 679667252 is about 26070.4286884585. The cubic root of 679667252 is about 879.2224761000. Note that the first 3 decimals are identical.

The spelling of 679667252 in words is "six hundred seventy-nine million, six hundred sixty-seven thousand, two hundred fifty-two".