680814669 has 16 divisors (see below), whose sum is σ = 968993280. Its totient is φ = 423929520.

The previous prime is 680814647. The next prime is 680814679. The reversal of 680814669 is 966418086.

It is not a de Polignac number, because 680814669 - 2⁸ = 680814413 is a prime.

It is a super-2 number, since 2×680814669² = 927017227051159122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680814679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80067 + ... + 88160.

It is an arithmetic number, because the mean of its divisors is an integer number (60562080).

Almost surely, 2^680814669 is an apocalyptic number.

It is an amenable number.

680814669 is a deficient number, since it is larger than the sum of its proper divisors (288178611).

680814669 is a wasteful number, since it uses less digits than its factorization.

680814669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168320.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 680814669 is about 26092.4255100978. The cubic root of 680814669 is about 879.7169669156.

The spelling of 680814669 in words is "six hundred eighty million, eight hundred fourteen thousand, six hundred sixty-nine".