64467865 has 16 divisors (see below), whose sum is σ = 96451200. Its totient is φ = 40187520.

The previous prime is 64467857. The next prime is 64467883. The reversal of 64467865 is 56876446.

It is not a de Polignac number, because 64467865 - 2³ = 64467857 is a prime.

It is a super-2 number, since 2×64467865² = 8312211235316450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83340 + ... + 84109.

It is an arithmetic number, because the mean of its divisors is an integer number (6028200).

Almost surely, 2^64467865 is an apocalyptic number.

It is an amenable number.

64467865 is a deficient number, since it is larger than the sum of its proper divisors (31983335).

64467865 is a wasteful number, since it uses less digits than its factorization.

64467865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167472.

The product of its digits is 967680, while the sum is 46.

The square root of 64467865 is about 8029.1883151412. The cubic root of 64467865 is about 400.9723531581.

The spelling of 64467865 in words is "sixty-four million, four hundred sixty-seven thousand, eight hundred sixty-five".