897194155646 has 8 divisors (see below), whose sum is σ = 1416622351080. Its totient is φ = 424986705288.

The previous prime is 897194155519. The next prime is 897194155679. The reversal of 897194155646 is 646551491798.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11805186221 + ... + 11805186296.

It is an arithmetic number, because the mean of its divisors is an integer number (177077793885).

Almost surely, 2^897194155646 is an apocalyptic number.

897194155646 is a deficient number, since it is larger than the sum of its proper divisors (519428195434).

897194155646 is a wasteful number, since it uses less digits than its factorization.

897194155646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23610372538.

The product of its digits is 65318400, while the sum is 65.

The spelling of 897194155646 in words is "eight hundred ninety-seven billion, one hundred ninety-four million, one hundred fifty-five thousand, six hundred forty-six".