83618312 has 36 divisors (see below), whose sum is σ = 162460935. Its totient is φ = 40347840.

The previous prime is 83618279. The next prime is 83618321. The reversal of 83618312 is 21381638.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 13293316 + 70324996 = 3646^2 + 8386^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6466.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1370762 + ... + 1370822.

Almost surely, 2^83618312 is an apocalyptic number.

It is an amenable number.

83618312 is a deficient number, since it is larger than the sum of its proper divisors (78842623).

83618312 is an equidigital number, since it uses as much as digits as its factorization.

83618312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 116 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 83618312 is about 9144.3048943044. The cubic root of 83618312 is about 437.2875694685.

Multiplying 83618312 by its sum of digits (32), we get a square (2675785984 = 51728²).

The spelling of 83618312 in words is "eighty-three million, six hundred eighteen thousand, three hundred twelve".