222620664 has 32 divisors (see below), whose sum is σ = 636059520. Its totient is φ = 63605856.

The previous prime is 222620653. The next prime is 222620683. The reversal of 222620664 is 466026222.

222620664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662394 + ... + 662729.

It is an arithmetic number, because the mean of its divisors is an integer number (19876860).

Almost surely, 2^222620664 is an apocalyptic number.

222620664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

222620664 is an abundant number, since it is smaller than the sum of its proper divisors (413438856).

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

222620664 is a wasteful number, since it uses less digits than its factorization.

222620664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325139 (or 1325135 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 222620664 is about 14920.4780084286. The cubic root of 222620664 is about 606.0686565135.

Adding to 222620664 its reverse (466026222), we get a palindrome (688646886).

The spelling of 222620664 in words is "two hundred twenty-two million, six hundred twenty thousand, six hundred sixty-four".