64424371 has 4 divisors (see below), whose sum is σ = 70281144. Its totient is φ = 58567600.

The previous prime is 64424333. The next prime is 64424377. The reversal of 64424371 is 17342446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64424371 - 2¹⁵ = 64391603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64424377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2928370 + ... + 2928391.

It is an arithmetic number, because the mean of its divisors is an integer number (17570286).

Almost surely, 2^64424371 is an apocalyptic number.

64424371 is a deficient number, since it is larger than the sum of its proper divisors (5856773).

64424371 is a wasteful number, since it uses less digits than its factorization.

64424371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5856772.

The product of its digits is 16128, while the sum is 31.

The square root of 64424371 is about 8026.4793652012. The cubic root of 64424371 is about 400.8821593072.

The spelling of 64424371 in words is "sixty-four million, four hundred twenty-four thousand, three hundred seventy-one".