64222237 has 2 divisors, whose sum is σ = 64222238. Its totient is φ = 64222236.

The previous prime is 64222229. The next prime is 64222253. The reversal of 64222237 is 73222246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52838361 + 11383876 = 7269^2 + 3374^2 .

It is a cyclic number.

It is not a de Polignac number, because 64222237 - 2³ = 64222229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64222217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32111118 + 32111119.

It is an arithmetic number, because the mean of its divisors is an integer number (32111119).

Almost surely, 2^64222237 is an apocalyptic number.

It is an amenable number.

64222237 is a deficient number, since it is larger than the sum of its proper divisors (1).

64222237 is an equidigital number, since it uses as much as digits as its factorization.

64222237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 28.

The square root of 64222237 is about 8013.8777754593. The cubic root of 64222237 is about 400.4624588734.

Subtracting 64222237 from its reverse (73222246), we obtain a palindrome (9000009).

The spelling of 64222237 in words is "sixty-four million, two hundred twenty-two thousand, two hundred thirty-seven".