897653885 has 4 divisors (see below), whose sum is σ = 1077184668. Its totient is φ = 718123104.

The previous prime is 897653863. The next prime is 897653899. The reversal of 897653885 is 588356798.

897653885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 232684516 + 664969369 = 15254^2 + 25787^2 .

It is a cyclic number.

It is not a de Polignac number, because 897653885 - 2²⁰ = 896605309 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 89765384 + ... + 89765393.

It is an arithmetic number, because the mean of its divisors is an integer number (269296167).

Almost surely, 2^897653885 is an apocalyptic number.

It is an amenable number.

897653885 is a deficient number, since it is larger than the sum of its proper divisors (179530783).

897653885 is a wasteful number, since it uses less digits than its factorization.

897653885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179530782.

The product of its digits is 14515200, while the sum is 59.

The square root of 897653885 is about 29960.8725674003. The cubic root of 897653885 is about 964.6497104418.

The spelling of 897653885 in words is "eight hundred ninety-seven million, six hundred fifty-three thousand, eight hundred eighty-five".