216743275 has 12 divisors (see below), whose sum is σ = 307156432. Its totient is φ = 148623840.

The previous prime is 216743257. The next prime is 216743287. The reversal of 216743275 is 572347612.

It is a happy number.

It is not a de Polignac number, because 216743275 - 2¹⁷ = 216612203 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 619092 + ... + 619441.

Almost surely, 2^216743275 is an apocalyptic number.

216743275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216743275 is a deficient number, since it is larger than the sum of its proper divisors (90413157).

216743275 is a wasteful number, since it uses less digits than its factorization.

216743275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238550 (or 1238545 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The square root of 216743275 is about 14722.2034695897. The cubic root of 216743275 is about 600.6874296925.

The spelling of 216743275 in words is "two hundred sixteen million, seven hundred forty-three thousand, two hundred seventy-five".