685218034 has 16 divisors (see below), whose sum is σ = 1047110400. Its totient is φ = 336233664.

The previous prime is 685217999. The next prime is 685218041. The reversal of 685218034 is 430812586.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 685217984 and 685218002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13402 + ... + 39370.

It is an arithmetic number, because the mean of its divisors is an integer number (65444400).

Almost surely, 2^685218034 is an apocalyptic number.

685218034 is a deficient number, since it is larger than the sum of its proper divisors (361892366).

685218034 is a wasteful number, since it uses less digits than its factorization.

685218034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26217.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 685218034 is about 26176.6696506641. The cubic root of 685218034 is about 881.6095002300.

The spelling of 685218034 in words is "six hundred eighty-five million, two hundred eighteen thousand, thirty-four".