216886875 has 40 divisors (see below), whose sum is σ = 364533312. Its totient is φ = 114660000.

The previous prime is 216886861. The next prime is 216886877. The reversal of 216886875 is 578688612.

It is not a de Polignac number, because 216886875 - 2¹² = 216882779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216886877) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 245184 + ... + 246066.

Almost surely, 2^216886875 is an apocalyptic number.

216886875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216886875 is a deficient number, since it is larger than the sum of its proper divisors (147646437).

216886875 is an equidigital number, since it uses as much as digits as its factorization.

216886875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037 (or 1022 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 51.

The square root of 216886875 is about 14727.0796494078. The cubic root of 216886875 is about 600.8200592164.

The spelling of 216886875 in words is "two hundred sixteen million, eight hundred eighty-six thousand, eight hundred seventy-five".