897413621 has 8 divisors (see below), whose sum is σ = 967582560. Its totient is φ = 827407152.

The previous prime is 897413599. The next prime is 897413633. The reversal of 897413621 is 126314798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-897413621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897413641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29015 + ... + 51348.

It is an arithmetic number, because the mean of its divisors is an integer number (120947820).

Almost surely, 2^897413621 is an apocalyptic number.

It is an amenable number.

897413621 is a deficient number, since it is larger than the sum of its proper divisors (70168939).

897413621 is a wasteful number, since it uses less digits than its factorization.

897413621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81235.

The product of its digits is 72576, while the sum is 41.

The square root of 897413621 is about 29956.8626695120. The cubic root of 897413621 is about 964.5636374451.

The spelling of 897413621 in words is "eight hundred ninety-seven million, four hundred thirteen thousand, six hundred twenty-one".