680670465 has 16 divisors (see below), whose sum is σ = 1089427968. Its totient is φ = 362905856.

The previous prime is 680670451. The next prime is 680670491. The reversal of 680670465 is 564076086.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 680670465 - 2⁴ = 680670449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59824 + ... + 70286.

It is an arithmetic number, because the mean of its divisors is an integer number (68089248).

Almost surely, 2^680670465 is an apocalyptic number.

It is an amenable number.

680670465 is a deficient number, since it is larger than the sum of its proper divisors (408757503).

680670465 is a wasteful number, since it uses less digits than its factorization.

680670465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14808.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 680670465 is about 26089.6620330736. The cubic root of 680670465 is about 879.6548513017.

The spelling of 680670465 in words is "six hundred eighty million, six hundred seventy thousand, four hundred sixty-five".