679280505 has 32 divisors (see below), whose sum is σ = 1151069184. Its totient is φ = 341347776.

The previous prime is 679280471. The next prime is 679280513. The reversal of 679280505 is 505082976.

It is not a de Polignac number, because 679280505 - 2⁷ = 679280377 is a prime.

It is a super-2 number, since 2×679280505² = 922844008946110050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8422 + ... + 37808.

It is an arithmetic number, because the mean of its divisors is an integer number (35970912).

Almost surely, 2^679280505 is an apocalyptic number.

It is an amenable number.

679280505 is a deficient number, since it is larger than the sum of its proper divisors (471788679).

679280505 is a wasteful number, since it uses less digits than its factorization.

679280505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29485.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 679280505 is about 26063.0102827743. The cubic root of 679280505 is about 879.0556782192.

The spelling of 679280505 in words is "six hundred seventy-nine million, two hundred eighty thousand, five hundred five".