680017977 has 32 divisors (see below), whose sum is σ = 1053388800. Its totient is φ = 432747216.

The previous prime is 680017967. The next prime is 680017991. The reversal of 680017977 is 779710086.

It is a happy number.

It is not a de Polignac number, because 680017977 - 2⁶ = 680017913 is a prime.

It is a super-3 number, since 3×680017977³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (680017927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 445738 + ... + 447260.

It is an arithmetic number, because the mean of its divisors is an integer number (32918400).

Almost surely, 2^680017977 is an apocalyptic number.

It is an amenable number.

680017977 is a deficient number, since it is larger than the sum of its proper divisors (373370823).

680017977 is a wasteful number, since it uses less digits than its factorization.

680017977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274 (or 2268 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 680017977 is about 26077.1543117726. The cubic root of 680017977 is about 879.3736835601.

The spelling of 680017977 in words is "six hundred eighty million, seventeen thousand, nine hundred seventy-seven".