222161564 has 12 divisors (see below), whose sum is σ = 397824504. Its totient is φ = 108497424.

The previous prime is 222161561. The next prime is 222161567. The reversal of 222161564 is 465161222.

It is an interprime number because it is at equal distance from previous prime (222161561) and next prime (222161567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222161561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645647 + ... + 645990.

It is an arithmetic number, because the mean of its divisors is an integer number (33152042).

Almost surely, 2^222161564 is an apocalyptic number.

It is an amenable number.

222161564 is a deficient number, since it is larger than the sum of its proper divisors (175662940).

222161564 is a wasteful number, since it uses less digits than its factorization.

222161564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291684 (or 1291682 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 222161564 is about 14905.0851725175. The cubic root of 222161564 is about 605.6517476098.

The spelling of 222161564 in words is "two hundred twenty-two million, one hundred sixty-one thousand, five hundred sixty-four".