64838073 has 4 divisors (see below), whose sum is σ = 86450768. Its totient is φ = 43225380.

The previous prime is 64838063. The next prime is 64838099. The reversal of 64838073 is 37083846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64838073 - 2⁶ = 64838009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64838003) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10806343 + ... + 10806348.

It is an arithmetic number, because the mean of its divisors is an integer number (21612692).

Almost surely, 2^64838073 is an apocalyptic number.

It is an amenable number.

64838073 is a deficient number, since it is larger than the sum of its proper divisors (21612695).

64838073 is a wasteful number, since it uses less digits than its factorization.

64838073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21612694.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 64838073 is about 8052.2091999649. The cubic root of 64838073 is about 401.7384192181.

The spelling of 64838073 in words is "sixty-four million, eight hundred thirty-eight thousand, seventy-three".