679554561 has 32 divisors (see below), whose sum is σ = 1057148928. Its totient is φ = 380278080.

The previous prime is 679554559. The next prime is 679554571. The reversal of 679554561 is 165455976.

It is not a de Polignac number, because 679554561 - 2¹ = 679554559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 679554561.

It is not an unprimeable number, because it can be changed into a prime (679554571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232636 + ... + 235538.

It is an arithmetic number, because the mean of its divisors is an integer number (33035904).

Almost surely, 2^679554561 is an apocalyptic number.

It is an amenable number.

679554561 is a deficient number, since it is larger than the sum of its proper divisors (377594367).

679554561 is a wasteful number, since it uses less digits than its factorization.

679554561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141.

The product of its digits is 1134000, while the sum is 48.

The square root of 679554561 is about 26068.2673187153. The cubic root of 679554561 is about 879.1738807831.

The spelling of 679554561 in words is "six hundred seventy-nine million, five hundred fifty-four thousand, five hundred sixty-one".