216865070 has 8 divisors (see below), whose sum is σ = 390357144. Its totient is φ = 86746024.

The previous prime is 216865013. The next prime is 216865093. The reversal of 216865070 is 70568612.

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

It is a super-2 number, since 2×216865070² = 94060917172209800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216865070.

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, 10843244 + ... + 10843263.

It is an arithmetic number, because the mean of its divisors is an integer number (48794643).

Almost surely, 2^216865070 is an apocalyptic number.

216865070 is a deficient number, since it is larger than the sum of its proper divisors (173492074).

216865070 is a wasteful number, since it uses less digits than its factorization.

216865070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21686514.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 216865070 is about 14726.3393278846. The cubic root of 216865070 is about 600.7999238033.

The spelling of 216865070 in words is "two hundred sixteen million, eight hundred sixty-five thousand, seventy".