897031650 has 48 divisors (see below), whose sum is σ = 2237133600. Its totient is φ = 237864960.

The previous prime is 897031633. The next prime is 897031651. The reversal of 897031650 is 56130798.

It is a super-2 number, since 2×897031650² = 1609331562203445000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 897031599 and 897031608.

It is not an unprimeable number, because it can be changed into a prime (897031651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10146 + ... + 43554.

It is an arithmetic number, because the mean of its divisors is an integer number (46606950).

Almost surely, 2^897031650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897031650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118566800).

897031650 is an abundant number, since it is smaller than the sum of its proper divisors (1340101950).

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

897031650 is a wasteful number, since it uses less digits than its factorization.

897031650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33603 (or 33598 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 897031650 is about 29950.4866404538. The cubic root of 897031650 is about 964.4267672165.

The spelling of 897031650 in words is "eight hundred ninety-seven million, thirty-one thousand, six hundred fifty".