64466138 has 24 divisors (see below), whose sum is σ = 106702176. Its totient is φ = 29189160.

The previous prime is 64466117. The next prime is 64466147. The reversal of 64466138 is 83166446.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 117581 + ... + 118127.

It is an arithmetic number, because the mean of its divisors is an integer number (4445924).

Almost surely, 2^64466138 is an apocalyptic number.

64466138 is a deficient number, since it is larger than the sum of its proper divisors (42236038).

64466138 is a wasteful number, since it uses less digits than its factorization.

64466138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1047 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 64466138 is about 8029.0807693035. The cubic root of 64466138 is about 400.9687726381.

The spelling of 64466138 in words is "sixty-four million, four hundred sixty-six thousand, one hundred thirty-eight".