679074561 has 48 divisors (see below), whose sum is σ = 1109322240. Its totient is φ = 396576000.

The previous prime is 679074559. The next prime is 679074587. The reversal of 679074561 is 165470976.

It is a happy number.

It is not a de Polignac number, because 679074561 - 2¹ = 679074559 is a prime.

It is a super-2 number, since 2×679074561² = 922284518794685442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679074511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1254951 + ... + 1255491.

It is an arithmetic number, because the mean of its divisors is an integer number (23110880).

Almost surely, 2^679074561 is an apocalyptic number.

It is an amenable number.

679074561 is a deficient number, since it is larger than the sum of its proper divisors (430247679).

679074561 is a wasteful number, since it uses less digits than its factorization.

679074561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 679074561 is about 26059.0590965982. The cubic root of 679074561 is about 878.9668319867.

The spelling of 679074561 in words is "six hundred seventy-nine million, seventy-four thousand, five hundred sixty-one".