668248626 has 16 divisors (see below), whose sum is σ = 1336890528. Its totient is φ = 222684000.

The previous prime is 668248621. The next prime is 668248649. The reversal of 668248626 is 626842866.

668248626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (668248621) 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, 8646 + ... + 37566.

It is an arithmetic number, because the mean of its divisors is an integer number (83555658).

Almost surely, 2^668248626 is an apocalyptic number.

668248626 is an abundant number, since it is smaller than the sum of its proper divisors (668641902).

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

668248626 is a wasteful number, since it uses less digits than its factorization.

668248626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32777.

The product of its digits is 1327104, while the sum is 48.

The square root of 668248626 is about 25850.5053335520. The cubic root of 668248626 is about 874.2709032859.

The spelling of 668248626 in words is "six hundred sixty-eight million, two hundred forty-eight thousand, six hundred twenty-six".