897868057 has 8 divisors (see below), whose sum is σ = 903840392. Its totient is φ = 891907200.

The previous prime is 897868051. The next prime is 897868093. The reversal of 897868057 is 750868798.

It can be written as a sum of positive squares in 4 ways, for example, as 74235456 + 823632601 = 8616^2 + 28699^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 897868057 - 2²³ = 889479449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 897867992 and 897868010.

It is not an unprimeable number, because it can be changed into a prime (897868051) 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, 199957 + ... + 204397.

It is an arithmetic number, because the mean of its divisors is an integer number (112980049).

Almost surely, 2^897868057 is an apocalyptic number.

It is an amenable number.

897868057 is a deficient number, since it is larger than the sum of its proper divisors (5972335).

897868057 is a wasteful number, since it uses less digits than its factorization.

897868057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739.

The product of its (nonzero) digits is 6773760, while the sum is 58.

The square root of 897868057 is about 29964.4465492023. The cubic root of 897868057 is about 964.7264232047.

The spelling of 897868057 in words is "eight hundred ninety-seven million, eight hundred sixty-eight thousand, fifty-seven".