680559134 has 4 divisors (see below), whose sum is σ = 1020838704. Its totient is φ = 340279566.

The previous prime is 680559101. The next prime is 680559137. The reversal of 680559134 is 431955086.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 680559091 and 680559100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680559137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170139782 + ... + 170139785.

It is an arithmetic number, because the mean of its divisors is an integer number (255209676).

Almost surely, 2^680559134 is an apocalyptic number.

680559134 is a deficient number, since it is larger than the sum of its proper divisors (340279570).

680559134 is a wasteful number, since it uses less digits than its factorization.

680559134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340279569.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 680559134 is about 26087.5283229362. The cubic root of 680559134 is about 879.6068896722.

The spelling of 680559134 in words is "six hundred eighty million, five hundred fifty-nine thousand, one hundred thirty-four".