64022431 has 16 divisors (see below), whose sum is σ = 71255808. Its totient is φ = 57513720.

The previous prime is 64022423. The next prime is 64022449. The reversal of 64022431 is 13422046.

It is a happy number.

It is not a de Polignac number, because 64022431 - 2³ = 64022423 is a prime.

It is a super-2 number, since 2×64022431² = 8197743342299522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64022411) 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 15 ways as a sum of consecutive naturals, for example, 136860 + ... + 137326.

It is an arithmetic number, because the mean of its divisors is an integer number (4453488).

Almost surely, 2^64022431 is an apocalyptic number.

64022431 is a deficient number, since it is larger than the sum of its proper divisors (7233377).

64022431 is a wasteful number, since it uses less digits than its factorization.

64022431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 64022431 is about 8001.4018146822. The cubic root of 64022431 is about 400.0467257915.

Adding to 64022431 its reverse (13422046), we get a palindrome (77444477).

The spelling of 64022431 in words is "sixty-four million, twenty-two thousand, four hundred thirty-one".