680674749 has 8 divisors (see below), whose sum is σ = 907693920. Its totient is φ = 453719376.

The previous prime is 680674739. The next prime is 680674769. The reversal of 680674749 is 947476086.

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

It is not a de Polignac number, because 680674749 - 2⁸ = 680674493 is a prime.

It is a super-2 number, since 2×680674749² = 926636227852426002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680674739) 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, 21534 + ... + 42720.

It is an arithmetic number, because the mean of its divisors is an integer number (113461740).

Almost surely, 2^680674749 is an apocalyptic number.

It is an amenable number.

680674749 is a deficient number, since it is larger than the sum of its proper divisors (227019171).

680674749 is a wasteful number, since it uses less digits than its factorization.

680674749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31899.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The square root of 680674749 is about 26089.7441344295. The cubic root of 680674749 is about 879.6566967535.

The spelling of 680674749 in words is "six hundred eighty million, six hundred seventy-four thousand, seven hundred forty-nine".