680744746 has 8 divisors (see below), whose sum is σ = 1113945984. Its totient is φ = 309429420.

The previous prime is 680744737. The next prime is 680744767. The reversal of 680744746 is 647447086.

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

It is a junction number, because it is equal to n+sod(n) for n = 680744696 and 680744705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15471450 + ... + 15471493.

It is an arithmetic number, because the mean of its divisors is an integer number (139243248).

Almost surely, 2^680744746 is an apocalyptic number.

680744746 is a deficient number, since it is larger than the sum of its proper divisors (433201238).

680744746 is a wasteful number, since it uses less digits than its factorization.

680744746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30942956.

The product of its (nonzero) digits is 903168, while the sum is 46.

The square root of 680744746 is about 26091.0855657636. The cubic root of 680744746 is about 879.6868488045.

The spelling of 680744746 in words is "six hundred eighty million, seven hundred forty-four thousand, seven hundred forty-six".