897365381 has 4 divisors (see below), whose sum is σ = 978944064. Its totient is φ = 815786700.

The previous prime is 897365369. The next prime is 897365387. The reversal of 897365381 is 183563798.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 897365381 - 2¹⁸ = 897103237 is a prime.

It is a super-2 number, since 2×897365381² = 1610529254034550322, 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 (897365387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40789325 + ... + 40789346.

It is an arithmetic number, because the mean of its divisors is an integer number (244736016).

Almost surely, 2^897365381 is an apocalyptic number.

It is an amenable number.

897365381 is a deficient number, since it is larger than the sum of its proper divisors (81578683).

897365381 is a wasteful number, since it uses less digits than its factorization.

897365381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81578682.

The product of its digits is 1088640, while the sum is 50.

The square root of 897365381 is about 29956.0575009463. The cubic root of 897365381 is about 964.5463539308.

The spelling of 897365381 in words is "eight hundred ninety-seven million, three hundred sixty-five thousand, three hundred eighty-one".