897039636 has 48 divisors (see below), whose sum is σ = 2119449024. Its totient is φ = 295266816.

The previous prime is 897039623. The next prime is 897039643. The reversal of 897039636 is 636930798.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477996 + ... + 479868.

It is an arithmetic number, because the mean of its divisors is an integer number (44155188).

Almost surely, 2^897039636 is an apocalyptic number.

It is an amenable number.

897039636 is an abundant number, since it is smaller than the sum of its proper divisors (1222409388).

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

897039636 is a wasteful number, since it uses less digits than its factorization.

897039636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 897039636 is about 29950.6199601945. The cubic root of 897039636 is about 964.4296292074.

The spelling of 897039636 in words is "eight hundred ninety-seven million, thirty-nine thousand, six hundred thirty-six".