997510560 has 192 divisors, whose sum is σ = 3321077760. Its totient is φ = 251274240.

The previous prime is 997510519. The next prime is 997510571. The reversal of 997510560 is 65015799.

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, 639061 + ... + 640619.

It is an arithmetic number, because the mean of its divisors is an integer number (17297280).

Almost surely, 2^997510560 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 997510560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1660538880).

997510560 is an abundant number, since it is smaller than the sum of its proper divisors (2323567200).

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

997510560 is a wasteful number, since it uses less digits than its factorization.

997510560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 997510560 is about 31583.3905716280. The cubic root of 997510560 is about 999.1694971226.

The spelling of 997510560 in words is "nine hundred ninety-seven million, five hundred ten thousand, five hundred sixty".