216442675 has 12 divisors (see below), whose sum is σ = 269272696. Its totient is φ = 172584000.

The previous prime is 216442663. The next prime is 216442679. The reversal of 216442675 is 576244612.

It is not a de Polignac number, because 216442675 - 2¹⁹ = 215918387 is a prime.

It is a super-2 number, since 2×216442675² = 93694863122311250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216442679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6426 + ... + 21775.

Almost surely, 2^216442675 is an apocalyptic number.

216442675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216442675 is a deficient number, since it is larger than the sum of its proper divisors (52830021).

216442675 is a wasteful number, since it uses less digits than its factorization.

216442675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28518 (or 28513 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 216442675 is about 14711.9908578003. The cubic root of 216442675 is about 600.4096045691.

The spelling of 216442675 in words is "two hundred sixteen million, four hundred forty-two thousand, six hundred seventy-five".