64464185 has 4 divisors (see below), whose sum is σ = 77357028. Its totient is φ = 51571344.

The previous prime is 64464173. The next prime is 64464199. The reversal of 64464185 is 58146446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15085456 + 49378729 = 3884^2 + 7027^2 .

It is a cyclic number.

It is not a de Polignac number, because 64464185 - 2⁶ = 64464121 is a prime.

It is a super-2 number, since 2×64464185² = 8311262295428450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6446414 + ... + 6446423.

It is an arithmetic number, because the mean of its divisors is an integer number (19339257).

Almost surely, 2^64464185 is an apocalyptic number.

It is an amenable number.

64464185 is a deficient number, since it is larger than the sum of its proper divisors (12892843).

64464185 is a wasteful number, since it uses less digits than its factorization.

64464185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12892842.

The product of its digits is 92160, while the sum is 38.

The square root of 64464185 is about 8028.9591479843. The cubic root of 64464185 is about 400.9647234843.

The spelling of 64464185 in words is "sixty-four million, four hundred sixty-four thousand, one hundred eighty-five".