680940935 has 8 divisors (see below), whose sum is σ = 834515136. Its totient is φ = 533162080.

The previous prime is 680940929. The next prime is 680940937. The reversal of 680940935 is 539049086.

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

It is not a de Polignac number, because 680940935 - 2⁴ = 680940919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680940937) 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, 1448576 + ... + 1449045.

It is an arithmetic number, because the mean of its divisors is an integer number (104314392).

Almost surely, 2^680940935 is an apocalyptic number.

680940935 is a deficient number, since it is larger than the sum of its proper divisors (153574201).

680940935 is a wasteful number, since it uses less digits than its factorization.

680940935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897673.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 680940935 is about 26094.8449890012. The cubic root of 680940935 is about 879.7713485661.

The spelling of 680940935 in words is "six hundred eighty million, nine hundred forty thousand, nine hundred thirty-five".