897001632 has 36 divisors (see below), whose sum is σ = 2550849210. Its totient is φ = 299000448.

The previous prime is 897001631. The next prime is 897001643. The reversal of 897001632 is 236100798.

It can be written as a sum of positive squares in only one way, i.e., 526977936 + 370023696 = 22956^2 + 19236^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×897001632² = 1609223855621326848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (897001631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1557007 + ... + 1557582.

Almost surely, 2^897001632 is an apocalyptic number.

It is an amenable number.

897001632 is an abundant number, since it is smaller than the sum of its proper divisors (1653847578).

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

897001632 is a wasteful number, since it uses less digits than its factorization.

897001632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114605 (or 3114594 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 897001632 is about 29949.9855091785. The cubic root of 897001632 is about 964.4160093331.

The spelling of 897001632 in words is "eight hundred ninety-seven million, one thousand, six hundred thirty-two".