216379375 has 10 divisors (see below), whose sum is σ = 270388448. Its totient is φ = 173103000.

The previous prime is 216379369. The next prime is 216379393. The reversal of 216379375 is 573973612.

It is a happy number.

It is not a de Polignac number, because 216379375 - 2⁵ = 216379343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 172479 + ... + 173728.

Almost surely, 2^216379375 is an apocalyptic number.

216379375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216379375 is a deficient number, since it is larger than the sum of its proper divisors (54009073).

216379375 is an frugal number, since it uses more digits than its factorization.

216379375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346227 (or 346212 counting only the distinct ones).

The product of its digits is 238140, while the sum is 43.

The square root of 216379375 is about 14709.8393940926. The cubic root of 216379375 is about 600.3510676939.

The spelling of 216379375 in words is "two hundred sixteen million, three hundred seventy-nine thousand, three hundred seventy-five".