64445194 has 32 divisors (see below), whose sum is σ = 111004992. Its totient is φ = 27792000.

The previous prime is 64445189. The next prime is 64445239. The reversal of 64445194 is 49154446.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32409 + ... + 34339.

It is an arithmetic number, because the mean of its divisors is an integer number (3468906).

Almost surely, 2^64445194 is an apocalyptic number.

64445194 is a deficient number, since it is larger than the sum of its proper divisors (46559798).

64445194 is a wasteful number, since it uses less digits than its factorization.

64445194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022.

The product of its digits is 69120, while the sum is 37.

The square root of 64445194 is about 8027.7764044597. The cubic root of 64445194 is about 400.9253451900.

The spelling of 64445194 in words is "sixty-four million, four hundred forty-five thousand, one hundred ninety-four".