679280691 has 8 divisors (see below), whose sum is σ = 906345360. Its totient is φ = 452534912.

The previous prime is 679280681. The next prime is 679280759. The reversal of 679280691 is 196082976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 679280691 - 2⁹ = 679280179 is a prime.

It is a super-2 number, since 2×679280691² = 922844514330874962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679280691.

It is not an unprimeable number, because it can be changed into a prime (679280681) 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, 74706 + ... + 83303.

It is an arithmetic number, because the mean of its divisors is an integer number (113293170).

Almost surely, 2^679280691 is an apocalyptic number.

679280691 is a deficient number, since it is larger than the sum of its proper divisors (227064669).

679280691 is a wasteful number, since it uses less digits than its factorization.

679280691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159445.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 679280691 is about 26063.0138510495. The cubic root of 679280691 is about 879.0557584533.

The spelling of 679280691 in words is "six hundred seventy-nine million, two hundred eighty thousand, six hundred ninety-one".