680704134 has 48 divisors (see below), whose sum is σ = 1511118336. Its totient is φ = 204248880.

The previous prime is 680704117. The next prime is 680704163. The reversal of 680704134 is 431407086.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 680704095 and 680704104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70227 + ... + 79329.

It is an arithmetic number, because the mean of its divisors is an integer number (31481632).

Almost surely, 2^680704134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680704134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (755559168).

680704134 is an abundant number, since it is smaller than the sum of its proper divisors (830414202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680704134 is a wasteful number, since it uses less digits than its factorization.

680704134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9233 (or 9222 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 680704134 is about 26090.3072806742. The cubic root of 680704134 is about 879.6693549480.

Multiplying 680704134 by its sum of digits (33), we get a palindrome (22463236422).

The spelling of 680704134 in words is "six hundred eighty million, seven hundred four thousand, one hundred thirty-four".