84644070 has 96 divisors (see below), whose sum is σ = 239936256. Its totient is φ = 19051200.

The previous prime is 84644051. The next prime is 84644083. The reversal of 84644070 is 7044648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103965 + ... + 104775.

It is an arithmetic number, because the mean of its divisors is an integer number (2499336).

Almost surely, 2^84644070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84644070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119968128).

84644070 is an abundant number, since it is smaller than the sum of its proper divisors (155292186).

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

84644070 is a wasteful number, since it uses less digits than its factorization.

84644070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 84644070 is about 9200.2211929931. The cubic root of 84644070 is about 439.0683973870.

The spelling of 84644070 in words is "eighty-four million, six hundred forty-four thousand, seventy".