680975949 has 8 divisors (see below), whose sum is σ = 908094240. Its totient is φ = 453920816.

The previous prime is 680975923. The next prime is 680975963. The reversal of 680975949 is 949579086.

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 680975949 - 2⁵ = 680975917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680975549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22954 + ... + 43460.

It is an arithmetic number, because the mean of its divisors is an integer number (113511780).

Almost surely, 2^680975949 is an apocalyptic number.

It is an amenable number.

680975949 is a deficient number, since it is larger than the sum of its proper divisors (227118291).

680975949 is a wasteful number, since it uses less digits than its factorization.

680975949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31579.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The square root of 680975949 is about 26095.5158791697. The cubic root of 680975949 is about 879.7864275960.

The spelling of 680975949 in words is "six hundred eighty million, nine hundred seventy-five thousand, nine hundred forty-nine".