680654451 has 8 divisors (see below), whose sum is σ = 912242320. Its totient is φ = 451418112.

The previous prime is 680654431. The next prime is 680654459. The reversal of 680654451 is 154456086.

It is a happy number.

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

It is not a de Polignac number, because 680654451 - 2⁵ = 680654419 is a prime.

It is a super-2 number, since 2×680654451² = 926580963332222802, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 587206 + ... + 588363.

It is an arithmetic number, because the mean of its divisors is an integer number (114030290).

Almost surely, 2^680654451 is an apocalyptic number.

680654451 is a deficient number, since it is larger than the sum of its proper divisors (231587869).

680654451 is a wasteful number, since it uses less digits than its factorization.

680654451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175765.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 680654451 is about 26089.3551280977. The cubic root of 680654451 is about 879.6479527588.

The spelling of 680654451 in words is "six hundred eighty million, six hundred fifty-four thousand, four hundred fifty-one".