664126002 has 24 divisors (see below), whose sum is σ = 1439562384. Its totient is φ = 221279544.

The previous prime is 664125983. The next prime is 664126003. The reversal of 664126002 is 200621466.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (664126003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43873 + ... + 57035.

It is an arithmetic number, because the mean of its divisors is an integer number (59981766).

Almost surely, 2^664126002 is an apocalyptic number.

664126002 is an abundant number, since it is smaller than the sum of its proper divisors (775436382).

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

664126002 is a wasteful number, since it uses less digits than its factorization.

664126002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15974 (or 15971 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 664126002 is about 25770.6422504368. The cubic root of 664126002 is about 872.4693144984.

Adding to 664126002 its reverse (200621466), we get a palindrome (864747468).

The spelling of 664126002 in words is "six hundred sixty-four million, one hundred twenty-six thousand, two".