222620642 has 16 divisors (see below), whose sum is σ = 339790464. Its totient is φ = 109389700.

The previous prime is 222620639. The next prime is 222620653. The reversal of 222620642 is 246026222.

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, 715667 + ... + 715977.

It is an arithmetic number, because the mean of its divisors is an integer number (21236904).

Almost surely, 2^222620642 is an apocalyptic number.

222620642 is a deficient number, since it is larger than the sum of its proper divisors (117169822).

222620642 is an frugal number, since it uses more digits than its factorization.

222620642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 222620642 is about 14920.4772711867. The cubic root of 222620642 is about 606.0686365490.

Adding to 222620642 its reverse (246026222), we get a palindrome (468646864).

The spelling of 222620642 in words is "two hundred twenty-two million, six hundred twenty thousand, six hundred forty-two".