216165622 has 8 divisors (see below), whose sum is σ = 341314200. Its totient is φ = 102394224.

The previous prime is 216165613. The next prime is 216165637. The reversal of 216165622 is 226561612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×216165622² = 93455152269293768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2844247 + ... + 2844322.

It is an arithmetic number, because the mean of its divisors is an integer number (42664275).

Almost surely, 2^216165622 is an apocalyptic number.

216165622 is a deficient number, since it is larger than the sum of its proper divisors (125148578).

216165622 is a wasteful number, since it uses less digits than its factorization.

216165622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5688590.

The product of its digits is 8640, while the sum is 31.

The square root of 216165622 is about 14702.5719518729. The cubic root of 216165622 is about 600.1533145248.

The spelling of 216165622 in words is "two hundred sixteen million, one hundred sixty-five thousand, six hundred twenty-two".