664250226 has 16 divisors (see below), whose sum is σ = 1328828544. Its totient is φ = 221362064.

The previous prime is 664250221. The next prime is 664250239. The reversal of 664250226 is 622052466.

It is not an unprimeable number, because it can be changed into a prime (664250221) 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, 18460 + ... + 40856.

It is an arithmetic number, because the mean of its divisors is an integer number (83051784).

Almost surely, 2^664250226 is an apocalyptic number.

664250226 is an abundant number, since it is smaller than the sum of its proper divisors (664578318).

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

664250226 is a wasteful number, since it uses less digits than its factorization.

664250226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27345.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 664250226 is about 25773.0523221445. The cubic root of 664250226 is about 872.5237092322.

The spelling of 664250226 in words is "six hundred sixty-four million, two hundred fifty thousand, two hundred twenty-six".