897581580 has 192 divisors, whose sum is σ = 2947940352. Its totient is φ = 199837440.

The previous prime is 897581567. The next prime is 897581593. The reversal of 897581580 is 85185798.

It is an interprime number because it is at equal distance from previous prime (897581567) and next prime (897581593).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4699285 + ... + 4699475.

It is an arithmetic number, because the mean of its divisors is an integer number (15353856).

Almost surely, 2^897581580 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 897581580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473970176).

897581580 is an abundant number, since it is smaller than the sum of its proper divisors (2050358772).

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

897581580 is a wasteful number, since it uses less digits than its factorization.

897581580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 51.

The square root of 897581580 is about 29959.6658859874. The cubic root of 897581580 is about 964.6238092671.

The spelling of 897581580 in words is "eight hundred ninety-seven million, five hundred eighty-one thousand, five hundred eighty".