84657912 has 32 divisors (see below), whose sum is σ = 211928400. Its totient is φ = 28181504.

The previous prime is 84657893. The next prime is 84657913. The reversal of 84657912 is 21975648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84657913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20398 + ... + 24194.

Almost surely, 2^84657912 is an apocalyptic number.

It is an amenable number.

84657912 is an abundant number, since it is smaller than the sum of its proper divisors (127270488).

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

84657912 is a wasteful number, since it uses less digits than its factorization.

84657912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735 (or 4731 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 84657912 is about 9200.9734267631. The cubic root of 84657912 is about 439.0923299693.

The spelling of 84657912 in words is "eighty-four million, six hundred fifty-seven thousand, nine hundred twelve".