84136816 has 20 divisors (see below), whose sum is σ = 167422072. Its totient is φ = 40931136.

The previous prime is 84136799. The next prime is 84136831. The reversal of 84136816 is 61863148.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70470 + ... + 71653.

Almost surely, 2^84136816 is an apocalyptic number.

It is an amenable number.

84136816 is a deficient number, since it is larger than the sum of its proper divisors (83285256).

84136816 is a wasteful number, since it uses less digits than its factorization.

84136816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142168 (or 142162 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 84136816 is about 9172.6122778628. The cubic root of 84136816 is about 438.1895581447.

It can be divided in two parts, 84 and 136816, that added together give a square (136900 = 370²).

The spelling of 84136816 in words is "eighty-four million, one hundred thirty-six thousand, eight hundred sixteen".