679250540 has 24 divisors (see below), whose sum is σ = 1426934880. Its totient is φ = 271603328.

The previous prime is 679250527. The next prime is 679250543. The reversal of 679250540 is 45052976.

It is a happy number.

It is a super-2 number, since 2×679250540² = 922762592180583200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 679250494 and 679250503.

It is not an unprimeable number, because it can be changed into a prime (679250543) 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, 84329 + ... + 92031.

It is an arithmetic number, because the mean of its divisors is an integer number (59455620).

Almost surely, 2^679250540 is an apocalyptic number.

It is an amenable number.

679250540 is an abundant number, since it is smaller than the sum of its proper divisors (747684340).

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

679250540 is a wasteful number, since it uses less digits than its factorization.

679250540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12121 (or 12119 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 679250540 is about 26062.4354195843. The cubic root of 679250540 is about 879.0427521450.

The spelling of 679250540 in words is "six hundred seventy-nine million, two hundred fifty thousand, five hundred forty".