64424415 has 48 divisors (see below), whose sum is σ = 115436160. Its totient is φ = 30426240.

The previous prime is 64424413. The next prime is 64424429. The reversal of 64424415 is 51442446.

It is a happy number.

It is not a de Polignac number, because 64424415 - 2¹ = 64424413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64424413) 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 47 ways as a sum of consecutive naturals, for example, 463416 + ... + 463554.

It is an arithmetic number, because the mean of its divisors is an integer number (2404920).

Almost surely, 2^64424415 is an apocalyptic number.

64424415 is a deficient number, since it is larger than the sum of its proper divisors (51011745).

64424415 is a wasteful number, since it uses less digits than its factorization.

64424415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 211 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 64424415 is about 8026.4821061284. The cubic root of 64424415 is about 400.8822505708.

It can be divided in two parts, 6442441 and 5, that added together give a palindrome (6442446).

The spelling of 64424415 in words is "sixty-four million, four hundred twenty-four thousand, four hundred fifteen".