64843238 has 16 divisors (see below), whose sum is σ = 103384320. Its totient is φ = 30415176.

The previous prime is 64843237. The next prime is 64843241. The reversal of 64843238 is 83234846.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64843237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4370 + ... + 12197.

It is an arithmetic number, because the mean of its divisors is an integer number (6461520).

Almost surely, 2^64843238 is an apocalyptic number.

64843238 is a deficient number, since it is larger than the sum of its proper divisors (38541082).

64843238 is a wasteful number, since it uses less digits than its factorization.

64843238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16691.

The product of its digits is 110592, while the sum is 38.

The square root of 64843238 is about 8052.5299130149. The cubic root of 64843238 is about 401.7490864271.

The spelling of 64843238 in words is "sixty-four million, eight hundred forty-three thousand, two hundred thirty-eight".