680421577 has 8 divisors (see below), whose sum is σ = 767874240. Its totient is φ = 597234960.

The previous prime is 680421569. The next prime is 680421589. The reversal of 680421577 is 775124086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680421577 - 2³ = 680421569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680422577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1066173 + ... + 1066810.

It is an arithmetic number, because the mean of its divisors is an integer number (95984280).

Almost surely, 2^680421577 is an apocalyptic number.

It is an amenable number.

680421577 is a deficient number, since it is larger than the sum of its proper divisors (87452663).

680421577 is a wasteful number, since it uses less digits than its factorization.

680421577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133023.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 680421577 is about 26084.8917383224. The cubic root of 680421577 is about 879.5476226020.

The spelling of 680421577 in words is "six hundred eighty million, four hundred twenty-one thousand, five hundred seventy-seven".