897861888 has 432 divisors, whose sum is σ = 3383392320. Its totient is φ = 232243200.

The previous prime is 897861863. The next prime is 897861947. The reversal of 897861888 is 888168798.

It is a happy number.

897861888 is a `hidden beast` number, since 8 + 9 + 7 + 8 + 618 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

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, 3725448 + ... + 3725688.

Almost surely, 2^897861888 is an apocalyptic number.

897861888 is a gapful number since it is divisible by the number (88) 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 897861888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1691696160).

897861888 is an abundant number, since it is smaller than the sum of its proper divisors (2485530432).

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

897861888 is a wasteful number, since it uses less digits than its factorization.

897861888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 264 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 63.

The square root of 897861888 is about 29964.3436103646. The cubic root of 897861888 is about 964.7242137446.

The spelling of 897861888 in words is "eight hundred ninety-seven million, eight hundred sixty-one thousand, eight hundred eighty-eight".