64065238 has 12 divisors (see below), whose sum is σ = 97448508. Its totient is φ = 31588560.

The previous prime is 64065233. The next prime is 64065289. The reversal of 64065238 is 83256046.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64065233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7653 + ... + 13663.

It is an arithmetic number, because the mean of its divisors is an integer number (8120709).

Almost surely, 2^64065238 is an apocalyptic number.

64065238 is a deficient number, since it is larger than the sum of its proper divisors (33383270).

64065238 is an equidigital number, since it uses as much as digits as its factorization.

64065238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6159 (or 6086 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 64065238 is about 8004.0763364676. The cubic root of 64065238 is about 400.1358663456.

The spelling of 64065238 in words is "sixty-four million, sixty-five thousand, two hundred thirty-eight".