685034079 has 8 divisors (see below), whose sum is σ = 922795440. Its totient is φ = 451981056.

The previous prime is 685034059. The next prime is 685034081. The reversal of 685034079 is 970430586.

It is a happy number.

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

It is not a de Polignac number, because 685034079 - 2⁸ = 685033823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 685034079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685034059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176744 + ... + 1177325.

It is an arithmetic number, because the mean of its divisors is an integer number (115349430).

Almost surely, 2^685034079 is an apocalyptic number.

685034079 is a deficient number, since it is larger than the sum of its proper divisors (237761361).

685034079 is a wasteful number, since it uses less digits than its factorization.

685034079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354169.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 685034079 is about 26173.1556943369. The cubic root of 685034079 is about 881.5306002875.

The spelling of 685034079 in words is "six hundred eighty-five million, thirty-four thousand, seventy-nine".