679716513 has 24 divisors (see below), whose sum is σ = 1123157568. Its totient is φ = 388033632.

The previous prime is 679716511. The next prime is 679716517. The reversal of 679716513 is 315617976.

679716513 is a `hidden beast` number, since 67 + 9 + 71 + 6 + 513 = 666.

It is not a de Polignac number, because 679716513 - 2¹ = 679716511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (679716511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68631 + ... + 77907.

It is an arithmetic number, because the mean of its divisors is an integer number (46798232).

Almost surely, 2^679716513 is an apocalyptic number.

679716513 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

679716513 is a deficient number, since it is larger than the sum of its proper divisors (443441055).

679716513 is a wasteful number, since it uses less digits than its factorization.

679716513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10453 (or 10450 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 679716513 is about 26071.3734390807. The cubic root of 679716513 is about 879.2437170488.

The spelling of 679716513 in words is "six hundred seventy-nine million, seven hundred sixteen thousand, five hundred thirteen".