680065937 has 4 divisors (see below), whose sum is σ = 682014900. Its totient is φ = 678116976.

The previous prime is 680065931. The next prime is 680065951. The reversal of 680065937 is 739560086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 561168721 + 118897216 = 23689^2 + 10904^2 .

It is a cyclic number.

It is not a de Polignac number, because 680065937 - 2⁶ = 680065873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680065931) 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, 973958 + ... + 974655.

It is an arithmetic number, because the mean of its divisors is an integer number (170503725).

Almost surely, 2^680065937 is an apocalyptic number.

It is an amenable number.

680065937 is a deficient number, since it is larger than the sum of its proper divisors (1948963).

680065937 is a wasteful number, since it uses less digits than its factorization.

680065937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948962.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 680065937 is about 26078.0738744256. The cubic root of 680065937 is about 879.3943564305.

The spelling of 680065937 in words is "six hundred eighty million, sixty-five thousand, nine hundred thirty-seven".