897951556 has 12 divisors (see below), whose sum is σ = 1639737792. Its totient is φ = 429455048.

The previous prime is 897951553. The next prime is 897951623. The reversal of 897951556 is 655159798.

It is a super-2 number, since 2×897951556² = 1612633993845642272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 897951497 and 897951506.

It is not an unprimeable number, because it can be changed into a prime (897951553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4880080 + ... + 4880263.

It is an arithmetic number, because the mean of its divisors is an integer number (136644816).

Almost surely, 2^897951556 is an apocalyptic number.

It is an amenable number.

897951556 is a deficient number, since it is larger than the sum of its proper divisors (741786236).

897951556 is a wasteful number, since it uses less digits than its factorization.

897951556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9760370 (or 9760368 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 55.

The square root of 897951556 is about 29965.8398180328. The cubic root of 897951556 is about 964.7563278193.

The spelling of 897951556 in words is "eight hundred ninety-seven million, nine hundred fifty-one thousand, five hundred fifty-six".