64636226 has 8 divisors (see below), whose sum is σ = 97812684. Its totient is φ = 32032000.

The previous prime is 64636223. The next prime is 64636259. The reversal of 64636226 is 62263646.

It can be written as a sum of positive squares in 2 ways, for example, as 60078001 + 4558225 = 7751^2 + 2135^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64636223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142775 + ... + 143226.

Almost surely, 2^64636226 is an apocalyptic number.

64636226 is a deficient number, since it is larger than the sum of its proper divisors (33176458).

64636226 is a wasteful number, since it uses less digits than its factorization.

64636226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286116.

The product of its digits is 62208, while the sum is 35.

The square root of 64636226 is about 8039.6657890736. The cubic root of 64636226 is about 401.3211027485.

The spelling of 64636226 in words is "sixty-four million, six hundred thirty-six thousand, two hundred twenty-six".