679207491 has 8 divisors (see below), whose sum is σ = 1006233360. Its totient is φ = 452804976.

The previous prime is 679207453. The next prime is 679207493. The reversal of 679207491 is 194702976.

679207491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 679207491 - 2²⁵ = 645653059 is a prime.

It is a super-2 number, since 2×679207491² = 922645631661030162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679207493) 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, 12577890 + ... + 12577943.

It is an arithmetic number, because the mean of its divisors is an integer number (125779170).

Almost surely, 2^679207491 is an apocalyptic number.

679207491 is a deficient number, since it is larger than the sum of its proper divisors (327025869).

679207491 is a wasteful number, since it uses less digits than its factorization.

679207491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25155842 (or 25155836 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 679207491 is about 26061.6095243559. The cubic root of 679207491 is about 879.0241813287.

The spelling of 679207491 in words is "six hundred seventy-nine million, two hundred seven thousand, four hundred ninety-one".