896645209 has 4 divisors (see below), whose sum is σ = 925569280. Its totient is φ = 867721140.

The previous prime is 896645177. The next prime is 896645213. The reversal of 896645209 is 902546698.

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 896645209 - 2⁵ = 896645177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (896640209) 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, 14461989 + ... + 14462050.

It is an arithmetic number, because the mean of its divisors is an integer number (231392320).

Almost surely, 2^896645209 is an apocalyptic number.

It is an amenable number.

896645209 is a deficient number, since it is larger than the sum of its proper divisors (28924071).

896645209 is a wasteful number, since it uses less digits than its factorization.

896645209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28924070.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 896645209 is about 29944.0346145939. The cubic root of 896645209 is about 964.2882557247.

The spelling of 896645209 in words is "eight hundred ninety-six million, six hundred forty-five thousand, two hundred nine".