680687234 has 8 divisors (see below), whose sum is σ = 1029070848. Its totient is φ = 337663620.

The previous prime is 680687221. The next prime is 680687257. The reversal of 680687234 is 432786086.

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

It is a super-2 number, since 2×680687234² = 926670221061141512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1339682 + ... + 1340189.

It is an arithmetic number, because the mean of its divisors is an integer number (128633856).

Almost surely, 2^680687234 is an apocalyptic number.

680687234 is a deficient number, since it is larger than the sum of its proper divisors (348383614).

680687234 is a wasteful number, since it uses less digits than its factorization.

680687234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680000.

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 680687234 is about 26089.9834035976. The cubic root of 680687234 is about 879.6620749691.

The spelling of 680687234 in words is "six hundred eighty million, six hundred eighty-seven thousand, two hundred thirty-four".