679163966 has 16 divisors (see below), whose sum is σ = 1099366128. Its totient is φ = 312816000.

The previous prime is 679163951. The next prime is 679163981. The reversal of 679163966 is 669361976.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (679163951) and next prime (679163981).

It is a super-2 number, since 2×679163966² = 922527385425698312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13835 + ... + 39366.

It is an arithmetic number, because the mean of its divisors is an integer number (68710383).

Almost surely, 2^679163966 is an apocalyptic number.

679163966 is a deficient number, since it is larger than the sum of its proper divisors (420202162).

679163966 is a wasteful number, since it uses less digits than its factorization.

679163966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53707.

The product of its digits is 2204496, while the sum is 53.

The square root of 679163966 is about 26060.7744704566. The cubic root of 679163966 is about 879.0054043741.

The spelling of 679163966 in words is "six hundred seventy-nine million, one hundred sixty-three thousand, nine hundred sixty-six".