216335674 has 4 divisors (see below), whose sum is σ = 324503514. Its totient is φ = 108167836.

The previous prime is 216335657. The next prime is 216335681. The reversal of 216335674 is 476533612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 214417449 + 1918225 = 14643^2 + 1385^2 .

It is a super-2 number, since 2×216335674² = 93602247690068552, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54083917 + ... + 54083920.

Almost surely, 2^216335674 is an apocalyptic number.

216335674 is a deficient number, since it is larger than the sum of its proper divisors (108167840).

216335674 is a wasteful number, since it uses less digits than its factorization.

216335674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108167839.

The product of its digits is 90720, while the sum is 37.

The square root of 216335674 is about 14708.3538847826. The cubic root of 216335674 is about 600.3106483941.

The spelling of 216335674 in words is "two hundred sixteen million, three hundred thirty-five thousand, six hundred seventy-four".