679173802 has 4 divisors (see below), whose sum is σ = 1018760706. Its totient is φ = 339586900.

The previous prime is 679173779. The next prime is 679173821. The reversal of 679173802 is 208371976.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 351600001 + 327573801 = 18751^2 + 18099^2 .

It is a super-2 number, since 2×679173802² = 922554106646270408, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 169793449 + ... + 169793452.

Almost surely, 2^679173802 is an apocalyptic number.

679173802 is a deficient number, since it is larger than the sum of its proper divisors (339586904).

679173802 is a wasteful number, since it uses less digits than its factorization.

679173802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339586903.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 679173802 is about 26060.9631825073. The cubic root of 679173802 is about 879.0096477556.

The spelling of 679173802 in words is "six hundred seventy-nine million, one hundred seventy-three thousand, eight hundred two".