664124226 has 16 divisors (see below), whose sum is σ = 1328725728. Its totient is φ = 221295200.

The previous prime is 664124221. The next prime is 664124231. The reversal of 664124226 is 622421466.

It is an interprime number because it is at equal distance from previous prime (664124221) and next prime (664124231).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (664124221) 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, 315 + ... + 36446.

It is an arithmetic number, because the mean of its divisors is an integer number (83045358).

Almost surely, 2^664124226 is an apocalyptic number.

664124226 is an abundant number, since it is smaller than the sum of its proper divisors (664601502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664124226 is a wasteful number, since it uses less digits than its factorization.

664124226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39777.

The product of its digits is 27648, while the sum is 33.

The square root of 664124226 is about 25770.6077925997. The cubic root of 664124226 is about 872.4685367811.

The spelling of 664124226 in words is "six hundred sixty-four million, one hundred twenty-four thousand, two hundred twenty-six".