201464865 has 24 divisors (see below), whose sum is σ = 399092928. Its totient is φ = 92098080.

The previous prime is 201464849. The next prime is 201464891. The reversal of 201464865 is 568464102.

201464865 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 648 + 6 + 5 = 666.

It is not a de Polignac number, because 201464865 - 2⁴ = 201464849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319471 + ... + 320100.

It is an arithmetic number, because the mean of its divisors is an integer number (16628872).

Almost surely, 2^201464865 is an apocalyptic number.

It is an amenable number.

201464865 is a deficient number, since it is larger than the sum of its proper divisors (197628063).

201464865 is a wasteful number, since it uses less digits than its factorization.

201464865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639589 (or 639586 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 201464865 is about 14193.8319350343. The cubic root of 201464865 is about 586.2278397038.

The spelling of 201464865 in words is "two hundred one million, four hundred sixty-four thousand, eight hundred sixty-five".