423056646 has 12 divisors (see below), whose sum is σ = 916622772. Its totient is φ = 141018876.

The previous prime is 423056629. The next prime is 423056651. The reversal of 423056646 is 646650324.

423056646 is a `hidden beast` number, since 4 + 2 + 3 + 0 + 5 + 6 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 423056646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11751556 + ... + 11751591.

It is an arithmetic number, because the mean of its divisors is an integer number (76385231).

Almost surely, 2^423056646 is an apocalyptic number.

423056646 is an abundant number, since it is smaller than the sum of its proper divisors (493566126).

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

423056646 is a wasteful number, since it uses less digits than its factorization.

423056646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23503155 (or 23503152 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 423056646 is about 20568.3408664870. The cubic root of 423056646 is about 750.6995819106.

The spelling of 423056646 in words is "four hundred twenty-three million, fifty-six thousand, six hundred forty-six".