685229223 has 16 divisors (see below), whose sum is σ = 1050416640. Its totient is φ = 389212896.

The previous prime is 685229213. The next prime is 685229231. The reversal of 685229223 is 322922586.

It is not a de Polignac number, because 685229223 - 2¹² = 685225127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685229203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94188 + ... + 101201.

It is an arithmetic number, because the mean of its divisors is an integer number (65651040).

Almost surely, 2^685229223 is an apocalyptic number.

685229223 is a deficient number, since it is larger than the sum of its proper divisors (365187417).

685229223 is a wasteful number, since it uses less digits than its factorization.

685229223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195566.

The product of its digits is 103680, while the sum is 39.

The square root of 685229223 is about 26176.8833706383. The cubic root of 685229223 is about 881.6142988365.

The spelling of 685229223 in words is "six hundred eighty-five million, two hundred twenty-nine thousand, two hundred twenty-three".