679690285 has 16 divisors (see below), whose sum is σ = 832564656. Its totient is φ = 532499968.

The previous prime is 679690267. The next prime is 679690309. The reversal of 679690285 is 582096976.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 54140164 + 625550121 = 7358^2 + 25011^2 .

It is a cyclic number.

It is not a de Polignac number, because 679690285 - 2¹³ = 679682093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161427 + ... + 165583.

It is an arithmetic number, because the mean of its divisors is an integer number (52035291).

Almost surely, 2^679690285 is an apocalyptic number.

It is an amenable number.

679690285 is a deficient number, since it is larger than the sum of its proper divisors (152874371).

679690285 is a wasteful number, since it uses less digits than its factorization.

679690285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 679690285 is about 26070.8704304248. The cubic root of 679690285 is about 879.2324078729.

The spelling of 679690285 in words is "six hundred seventy-nine million, six hundred ninety thousand, two hundred eighty-five".