680654457 has 12 divisors (see below), whose sum is σ = 1123620160. Its totient is φ = 388945368.

The previous prime is 680654431. The next prime is 680654459. The reversal of 680654457 is 754456086.

It is not a de Polignac number, because 680654457 - 2⁶ = 680654393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680654459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5401957 + ... + 5402082.

Almost surely, 2^680654457 is an apocalyptic number.

It is an amenable number.

680654457 is a deficient number, since it is larger than the sum of its proper divisors (442965703).

680654457 is a wasteful number, since it uses less digits than its factorization.

680654457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10804052 (or 10804049 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 680654457 is about 26089.3552430872. The cubic root of 680654457 is about 879.6479553435.

The spelling of 680654457 in words is "six hundred eighty million, six hundred fifty-four thousand, four hundred fifty-seven".