897665108 has 12 divisors (see below), whose sum is σ = 1653593760. Its totient is φ = 425209752.

The previous prime is 897665077. The next prime is 897665123. The reversal of 897665108 is 801566798.

It is a happy number.

It is a super-2 number, since 2×897665108² = 1611605292241303328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5905616 + ... + 5905767.

It is an arithmetic number, because the mean of its divisors is an integer number (137799480).

Almost surely, 2^897665108 is an apocalyptic number.

It is an amenable number.

897665108 is a deficient number, since it is larger than the sum of its proper divisors (755928652).

897665108 is a wasteful number, since it uses less digits than its factorization.

897665108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11811406 (or 11811404 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 897665108 is about 29961.0598610930. The cubic root of 897665108 is about 964.6537306322.

The spelling of 897665108 in words is "eight hundred ninety-seven million, six hundred sixty-five thousand, one hundred eight".