965643201 has 20 divisors (see below), whose sum is σ = 1505224512. Its totient is φ = 615771288.

The previous prime is 965643191. The next prime is 965643209. The reversal of 965643201 is 102346569.

It is a happy number.

965643201 is a `hidden beast` number, since 9 + 6 + 5 + 643 + 2 + 0 + 1 = 666.

965643201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 965643201 - 2¹⁴ = 965626817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (965643209) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 257301 + ... + 261026.

Almost surely, 2^965643201 is an apocalyptic number.

It is an amenable number.

965643201 is a deficient number, since it is larger than the sum of its proper divisors (539581311).

965643201 is a wasteful number, since it uses less digits than its factorization.

965643201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518362 (or 518353 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 965643201 is about 31074.8000958976. The cubic root of 965643201 is about 988.4140170813.

The spelling of 965643201 in words is "nine hundred sixty-five million, six hundred forty-three thousand, two hundred one".