684722227 has 12 divisors (see below), whose sum is σ = 799701336. Its totient is φ = 584556000.

The previous prime is 684722221. The next prime is 684722231. The reversal of 684722227 is 722227486.

It is a happy number.

It is not a de Polignac number, because 684722227 - 2¹⁵ = 684689459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 684722227.

It is not an unprimeable number, because it can be changed into a prime (684722221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15538 + ... + 40135.

It is an arithmetic number, because the mean of its divisors is an integer number (66641778).

Almost surely, 2^684722227 is an apocalyptic number.

684722227 is a deficient number, since it is larger than the sum of its proper divisors (114979109).

684722227 is a wasteful number, since it uses less digits than its factorization.

684722227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55938 (or 55931 counting only the distinct ones).

The product of its digits is 150528, while the sum is 40.

The square root of 684722227 is about 26167.1975381392. The cubic root of 684722227 is about 881.3968119035.

The spelling of 684722227 in words is "six hundred eighty-four million, seven hundred twenty-two thousand, two hundred twenty-seven".