680915877 has 4 divisors (see below), whose sum is σ = 907887840. Its totient is φ = 453943916.

The previous prime is 680915849. The next prime is 680915903. The reversal of 680915877 is 778519086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 680915877 - 2⁶ = 680915813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680915827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113485977 + ... + 113485982.

It is an arithmetic number, because the mean of its divisors is an integer number (226971960).

Almost surely, 2^680915877 is an apocalyptic number.

It is an amenable number.

680915877 is a deficient number, since it is larger than the sum of its proper divisors (226971963).

680915877 is a wasteful number, since it uses less digits than its factorization.

680915877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226971962.

The product of its (nonzero) digits is 846720, while the sum is 51.

The square root of 680915877 is about 26094.3648514387. The cubic root of 680915877 is about 879.7605568417.

The spelling of 680915877 in words is "six hundred eighty million, nine hundred fifteen thousand, eight hundred seventy-seven".