222645696 has 112 divisors (see below), whose sum is σ = 725082624. Its totient is φ = 58715136.

The previous prime is 222645691. The next prime is 222645733. The reversal of 222645696 is 696546222.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×222645696² = 99142211894648832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222645691) 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, 11101 + ... + 23843.

It is an arithmetic number, because the mean of its divisors is an integer number (6473952).

Almost surely, 2^222645696 is an apocalyptic number.

222645696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222645696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362541312).

222645696 is an abundant number, since it is smaller than the sum of its proper divisors (502436928).

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

222645696 is a wasteful number, since it uses less digits than its factorization.

222645696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12778 (or 12768 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 222645696 is about 14921.3168319690. The cubic root of 222645696 is about 606.0913715986.

The spelling of 222645696 in words is "two hundred twenty-two million, six hundred forty-five thousand, six hundred ninety-six".