679505456 has 20 divisors (see below), whose sum is σ = 1504619472. Its totient is φ = 291216576.

The previous prime is 679505447. The next prime is 679505459. The reversal of 679505456 is 654505976.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 679505456.

It is not an unprimeable number, because it can be changed into a prime (679505459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3033395 + ... + 3033618.

Almost surely, 2^679505456 is an apocalyptic number.

It is an amenable number.

679505456 is an abundant number, since it is smaller than the sum of its proper divisors (825114016).

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

679505456 is a wasteful number, since it uses less digits than its factorization.

679505456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6067028 (or 6067022 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 47.

The square root of 679505456 is about 26067.3254477708. The cubic root of 679505456 is about 879.1527037377.

The spelling of 679505456 in words is "six hundred seventy-nine million, five hundred five thousand, four hundred fifty-six".