426664506 has 16 divisors (see below), whose sum is σ = 853990848. Its totient is φ = 142111200.

The previous prime is 426664493. The next prime is 426664507. The reversal of 426664506 is 605466624.

It is not an unprimeable number, because it can be changed into a prime (426664507) 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, 18990 + ... + 34841.

It is an arithmetic number, because the mean of its divisors is an integer number (53374428).

Almost surely, 2^426664506 is an apocalyptic number.

426664506 is an abundant number, since it is smaller than the sum of its proper divisors (427326342).

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

426664506 is a wasteful number, since it uses less digits than its factorization.

426664506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55157.

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 426664506 is about 20655.8588782941. The cubic root of 426664506 is about 752.8275523119.

The spelling of 426664506 in words is "four hundred twenty-six million, six hundred sixty-four thousand, five hundred six".