64405017 has 16 divisors (see below), whose sum is σ = 97217280. Its totient is φ = 42125616.

The previous prime is 64404997. The next prime is 64405021. The reversal of 64405017 is 71050446.

64405017 is a `hidden beast` number, since 644 + 0 + 5 + 0 + 17 = 666.

It is not a de Polignac number, because 64405017 - 2¹¹ = 64402969 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (64405057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21073 + ... + 23934.

It is an arithmetic number, because the mean of its divisors is an integer number (6076080).

Almost surely, 2^64405017 is an apocalyptic number.

It is an amenable number.

64405017 is a deficient number, since it is larger than the sum of its proper divisors (32812263).

64405017 is a wasteful number, since it uses less digits than its factorization.

64405017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45069 (or 45063 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 64405017 is about 8025.2736401945. The cubic root of 64405017 is about 400.8420117137.

The spelling of 64405017 in words is "sixty-four million, four hundred five thousand, seventeen".