897356140 has 12 divisors (see below), whose sum is σ = 1884447936. Its totient is φ = 358942448.

The previous prime is 897356123. The next prime is 897356143. The reversal of 897356140 is 41653798.

It is not an unprimeable number, because it can be changed into a prime (897356143) 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, 22433884 + ... + 22433923.

It is an arithmetic number, because the mean of its divisors is an integer number (157037328).

Almost surely, 2^897356140 is an apocalyptic number.

It is an amenable number.

897356140 is an abundant number, since it is smaller than the sum of its proper divisors (987091796).

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

897356140 is a wasteful number, since it uses less digits than its factorization.

897356140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44867816 (or 44867814 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 897356140 is about 29955.9032579557. The cubic root of 897356140 is about 964.5430429779.

The spelling of 897356140 in words is "eight hundred ninety-seven million, three hundred fifty-six thousand, one hundred forty".