216613436 has 12 divisors (see below), whose sum is σ = 408233112. Its totient is φ = 99975408.

The previous prime is 216613421. The next prime is 216613447. The reversal of 216613436 is 634316612.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 2082770 + ... + 2082873.

It is an arithmetic number, because the mean of its divisors is an integer number (34019426).

Almost surely, 2^216613436 is an apocalyptic number.

216613436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

216613436 is a deficient number, since it is larger than the sum of its proper divisors (191619676).

216613436 is a wasteful number, since it uses less digits than its factorization.

216613436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165660 (or 4165658 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 216613436 is about 14717.7931769678. The cubic root of 216613436 is about 600.5674594434.

The spelling of 216613436 in words is "two hundred sixteen million, six hundred thirteen thousand, four hundred thirty-six".