897644160 has 512 divisors, whose sum is σ = 3742502400. Its totient is φ = 199065600.

The previous prime is 897644159. The next prime is 897644173. The reversal of 897644160 is 61446798.

897644160 is a `hidden beast` number, since 89 + 76 + 441 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 4959270 + ... + 4959450.

It is an arithmetic number, because the mean of its divisors is an integer number (7309575).

Almost surely, 2^897644160 is an apocalyptic number.

897644160 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897644160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1871251200).

897644160 is an abundant number, since it is smaller than the sum of its proper divisors (2844858240).

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

897644160 is a wasteful number, since it uses less digits than its factorization.

897644160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 897644160 is about 29960.7102719545. The cubic root of 897644160 is about 964.6462268228.

The spelling of 897644160 in words is "eight hundred ninety-seven million, six hundred forty-four thousand, one hundred sixty".