680604881 has 4 divisors (see below), whose sum is σ = 742478064. Its totient is φ = 618731700.

The previous prime is 680604787. The next prime is 680604889. The reversal of 680604881 is 188406086.

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 680604881 - 2¹⁴ = 680588497 is a prime.

It is a super-2 number, since 2×680604881² = 926446008082048322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680604889) 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, 30936575 + ... + 30936596.

It is an arithmetic number, because the mean of its divisors is an integer number (185619516).

Almost surely, 2^680604881 is an apocalyptic number.

It is an amenable number.

680604881 is a deficient number, since it is larger than the sum of its proper divisors (61873183).

680604881 is a wasteful number, since it uses less digits than its factorization.

680604881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61873182.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 680604881 is about 26088.4051064836. The cubic root of 680604881 is about 879.6265982093.

The spelling of 680604881 in words is "six hundred eighty million, six hundred four thousand, eight hundred eighty-one".