64422231 has 8 divisors (see below), whose sum is σ = 90949104. Its totient is φ = 40421760.

The previous prime is 64422229. The next prime is 64422233. The reversal of 64422231 is 13222446.

It is an interprime number because it is at equal distance from previous prime (64422229) and next prime (64422233).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64422231 - 2¹ = 64422229 is a prime.

It is a super-2 number, since 2×64422231² = 8300447694034722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64422233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631540 + ... + 631641.

It is an arithmetic number, because the mean of its divisors is an integer number (11368638).

Almost surely, 2^64422231 is an apocalyptic number.

64422231 is a deficient number, since it is larger than the sum of its proper divisors (26526873).

64422231 is a wasteful number, since it uses less digits than its factorization.

64422231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263201.

The product of its digits is 2304, while the sum is 24.

The square root of 64422231 is about 8026.3460553355. The cubic root of 64422231 is about 400.8777205246.

Adding to 64422231 its reverse (13222446), we get a palindrome (77644677).

The spelling of 64422231 in words is "sixty-four million, four hundred twenty-two thousand, two hundred thirty-one".