679025520 has 60 divisors (see below), whose sum is σ = 2280396456. Its totient is φ = 181073280.

The previous prime is 679025467. The next prime is 679025537. The reversal of 679025520 is 25520976.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×679025520² = 922151313622540800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470826 + ... + 472265.

Almost surely, 2^679025520 is an apocalyptic number.

679025520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

679025520 is an abundant number, since it is smaller than the sum of its proper divisors (1601370936).

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

679025520 is a wasteful number, since it uses less digits than its factorization.

679025520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943110 (or 943101 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 679025520 is about 26058.1181208467. The cubic root of 679025520 is about 878.9456725772.

The spelling of 679025520 in words is "six hundred seventy-nine million, twenty-five thousand, five hundred twenty".