680643722 has 32 divisors (see below), whose sum is σ = 1184730624. Its totient is φ = 289843200.

The previous prime is 680643713. The next prime is 680643731. The reversal of 680643722 is 227346086.

It is an interprime number because it is at equal distance from previous prime (680643713) and next prime (680643731).

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, 79322 + ... + 87482.

It is an arithmetic number, because the mean of its divisors is an integer number (37022832).

Almost surely, 2^680643722 is an apocalyptic number.

680643722 is a deficient number, since it is larger than the sum of its proper divisors (504086902).

680643722 is a wasteful number, since it uses less digits than its factorization.

680643722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 680643722 is about 26089.1495070269. The cubic root of 680643722 is about 879.6433308382.

The spelling of 680643722 in words is "six hundred eighty million, six hundred forty-three thousand, seven hundred twenty-two".