84312612 has 36 divisors (see below), whose sum is σ = 217149660. Its totient is φ = 27573312.

The previous prime is 84312601. The next prime is 84312619. The reversal of 84312612 is 21621348.

84312612 is a `hidden beast` number, since 8 + 43 + 1 + 2 + 612 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23097636 + 61214976 = 4806^2 + 7824^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84312619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20187 + ... + 24002.

It is an arithmetic number, because the mean of its divisors is an integer number (6031935).

Almost surely, 2^84312612 is an apocalyptic number.

It is an amenable number.

84312612 is an abundant number, since it is smaller than the sum of its proper divisors (132837048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84312612 is a wasteful number, since it uses less digits than its factorization.

84312612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44252 (or 44247 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 84312612 is about 9182.1899348685. The cubic root of 84312612 is about 438.4945311916.

The spelling of 84312612 in words is "eighty-four million, three hundred twelve thousand, six hundred twelve".