897646281 has 16 divisors (see below), whose sum is σ = 1374935424. Its totient is φ = 510280704.

The previous prime is 897646273. The next prime is 897646297. The reversal of 897646281 is 182646798.

It is not a de Polignac number, because 897646281 - 2³ = 897646273 is a prime.

It is a super-2 number, since 2×897646281² = 1611537691586261922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (897646201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106686 + ... + 114791.

It is an arithmetic number, because the mean of its divisors is an integer number (85933464).

Almost surely, 2^897646281 is an apocalyptic number.

It is an amenable number.

897646281 is a deficient number, since it is larger than the sum of its proper divisors (477289143).

897646281 is a wasteful number, since it uses less digits than its factorization.

897646281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221680.

The product of its digits is 1161216, while the sum is 51.

The square root of 897646281 is about 29960.7456682907. The cubic root of 897646281 is about 964.6469865942.

The spelling of 897646281 in words is "eight hundred ninety-seven million, six hundred forty-six thousand, two hundred eighty-one".