897724771 has 8 divisors (see below), whose sum is σ = 906341040. Its totient is φ = 889120512.

The previous prime is 897724733. The next prime is 897724777. The reversal of 897724771 is 177427798.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 897724771 - 2²³ = 889336163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (897724777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234156 + ... + 237958.

It is an arithmetic number, because the mean of its divisors is an integer number (113292630).

Almost surely, 2^897724771 is an apocalyptic number.

897724771 is a deficient number, since it is larger than the sum of its proper divisors (8616269).

897724771 is a wasteful number, since it uses less digits than its factorization.

897724771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005.

The product of its digits is 1382976, while the sum is 52.

The square root of 897724771 is about 29962.0555202743. The cubic root of 897724771 is about 964.6751019506.

The spelling of 897724771 in words is "eight hundred ninety-seven million, seven hundred twenty-four thousand, seven hundred seventy-one".