680634235 has 16 divisors (see below), whose sum is σ = 842335200. Its totient is φ = 527637760.

The previous prime is 680634191. The next prime is 680634247. The reversal of 680634235 is 532436086.

It is not a de Polignac number, because 680634235 - 2²³ = 672245627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 680634194 and 680634203.

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, 19404 + ... + 41686.

It is an arithmetic number, because the mean of its divisors is an integer number (52645950).

Almost surely, 2^680634235 is an apocalyptic number.

680634235 is a deficient number, since it is larger than the sum of its proper divisors (161700965).

680634235 is a wasteful number, since it uses less digits than its factorization.

680634235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22478.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 680634235 is about 26088.9676875111. The cubic root of 680634235 is about 879.6392439154.

It can be divided in two parts, 6806 and 34235, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 680634235 in words is "six hundred eighty million, six hundred thirty-four thousand, two hundred thirty-five".