84867642 has 64 divisors (see below), whose sum is σ = 200054400. Its totient is φ = 26593920.

The previous prime is 84867613. The next prime is 84867647. The reversal of 84867642 is 24676848.

It is not an unprimeable number, because it can be changed into a prime (84867647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185478 + ... + 185934.

It is an arithmetic number, because the mean of its divisors is an integer number (3125850).

Almost surely, 2^84867642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84867642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100027200).

84867642 is an abundant number, since it is smaller than the sum of its proper divisors (115186758).

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

84867642 is a wasteful number, since it uses less digits than its factorization.

84867642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 662 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 84867642 is about 9212.3635403733. The cubic root of 84867642 is about 439.4546307813.

The spelling of 84867642 in words is "eighty-four million, eight hundred sixty-seven thousand, six hundred forty-two".