679868402 has 8 divisors (see below), whose sum is σ = 1054968300. Its totient is φ = 328212304.

The previous prime is 679868401. The next prime is 679868443. The reversal of 679868402 is 204868976.

It can be written as a sum of positive squares in 2 ways, for example, as 612612001 + 67256401 = 24751^2 + 8201^2 .

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

It is not an unprimeable number, because it can be changed into a prime (679868401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5860877 + ... + 5860992.

Almost surely, 2^679868402 is an apocalyptic number.

679868402 is a deficient number, since it is larger than the sum of its proper divisors (375099898).

679868402 is a wasteful number, since it uses less digits than its factorization.

679868402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11721900.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 679868402 is about 26074.2862222535. The cubic root of 679868402 is about 879.3092039100.

The spelling of 679868402 in words is "six hundred seventy-nine million, eight hundred sixty-eight thousand, four hundred two".