64022399 has 16 divisors (see below), whose sum is σ = 75280128. Its totient is φ = 53307072.

The previous prime is 64022377. The next prime is 64022407. The reversal of 64022399 is 99322046.

It is not a de Polignac number, because 64022399 - 2⁸ = 64022143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64022369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67859 + ... + 68795.

It is an arithmetic number, because the mean of its divisors is an integer number (4705008).

Almost surely, 2^64022399 is an apocalyptic number.

64022399 is a deficient number, since it is larger than the sum of its proper divisors (11257729).

64022399 is a wasteful number, since it uses less digits than its factorization.

64022399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 64022399 is about 8001.3998150324. The cubic root of 64022399 is about 400.0466591404.

The spelling of 64022399 in words is "sixty-four million, twenty-two thousand, three hundred ninety-nine".