424872666 has 12 divisors (see below), whose sum is σ = 920557482. Its totient is φ = 141624216.

The previous prime is 424872659. The next prime is 424872667. The reversal of 424872666 is 666278424.

It can be written as a sum of positive squares in only one way, i.e., 301196025 + 123676641 = 17355^2 + 11121^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (424872667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11802001 + ... + 11802036.

Almost surely, 2^424872666 is an apocalyptic number.

424872666 is an abundant number, since it is smaller than the sum of its proper divisors (495684816).

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

424872666 is a wasteful number, since it uses less digits than its factorization.

424872666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23604045 (or 23604042 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 424872666 is about 20612.4395936046. The cubic root of 424872666 is about 751.7722037601.

The spelling of 424872666 in words is "four hundred twenty-four million, eight hundred seventy-two thousand, six hundred sixty-six".