897671455 has 4 divisors (see below), whose sum is σ = 1077205752. Its totient is φ = 718137160.

The previous prime is 897671443. The next prime is 897671459. The reversal of 897671455 is 554176798.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-897671455 is a prime.

It is a super-2 number, since 2×897671455² = 1611628082243634050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897671459) 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, 89767141 + ... + 89767150.

It is an arithmetic number, because the mean of its divisors is an integer number (269301438).

Almost surely, 2^897671455 is an apocalyptic number.

897671455 is a deficient number, since it is larger than the sum of its proper divisors (179534297).

897671455 is a wasteful number, since it uses less digits than its factorization.

897671455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179534296.

The product of its digits is 2116800, while the sum is 52.

The square root of 897671455 is about 29961.1657817248. The cubic root of 897671455 is about 964.6560041760.

The spelling of 897671455 in words is "eight hundred ninety-seven million, six hundred seventy-one thousand, four hundred fifty-five".