84870660 has 96 divisors (see below), whose sum is σ = 272805120. Its totient is φ = 19312128.

The previous prime is 84870641. The next prime is 84870679. The reversal of 84870660 is 6607848.

It is an interprime number because it is at equal distance from previous prime (84870641) and next prime (84870679).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166486 + ... + 166994.

It is an arithmetic number, because the mean of its divisors is an integer number (2841720).

Almost surely, 2^84870660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84870660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136402560).

84870660 is an abundant number, since it is smaller than the sum of its proper divisors (187934460).

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

84870660 is a wasteful number, since it uses less digits than its factorization.

84870660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 84870660 is about 9212.5273405293. The cubic root of 84870660 is about 439.4598399059.

The spelling of 84870660 in words is "eighty-four million, eight hundred seventy thousand, six hundred sixty".