64573438 has 8 divisors (see below), whose sum is σ = 101958120. Its totient is φ = 30587400.

The previous prime is 64573427. The next prime is 64573447. The reversal of 64573438 is 83437546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 64573438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849613 + ... + 849688.

It is an arithmetic number, because the mean of its divisors is an integer number (12744765).

Almost surely, 2^64573438 is an apocalyptic number.

64573438 is a deficient number, since it is larger than the sum of its proper divisors (37384682).

64573438 is a wasteful number, since it uses less digits than its factorization.

64573438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699322.

The product of its digits is 241920, while the sum is 40.

The square root of 64573438 is about 8035.7599516163. The cubic root of 64573438 is about 401.1911121093.

The spelling of 64573438 in words is "sixty-four million, five hundred seventy-three thousand, four hundred thirty-eight".