981370624 has 72 divisors (see below), whose sum is σ = 2201486112. Its totient is φ = 433213440.

The previous prime is 981370613. The next prime is 981370651. The reversal of 981370624 is 426073189.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70134 + ... + 82954.

It is an arithmetic number, because the mean of its divisors is an integer number (30576196).

Almost surely, 2^981370624 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 981370624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1100743056).

981370624 is an abundant number, since it is smaller than the sum of its proper divisors (1220115488).

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

981370624 is a wasteful number, since it uses less digits than its factorization.

981370624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12873 (or 12859 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 981370624 is about 31326.8355248340. The cubic root of 981370624 is about 993.7512423596.

The spelling of 981370624 in words is "nine hundred eighty-one million, three hundred seventy thousand, six hundred twenty-four".