420663344 has 20 divisors (see below), whose sum is σ = 857932440. Its totient is φ = 199261440.

The previous prime is 420663337. The next prime is 420663389. The reversal of 420663344 is 443366024.

It is a self number, because there is not a number n which added to its sum of digits gives 420663344.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691577 + ... + 692184.

It is an arithmetic number, because the mean of its divisors is an integer number (42896622).

Almost surely, 2^420663344 is an apocalyptic number.

It is an amenable number.

420663344 is an abundant number, since it is smaller than the sum of its proper divisors (437269096).

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

420663344 is a wasteful number, since it uses less digits than its factorization.

420663344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383788 (or 1383782 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

The square root of 420663344 is about 20510.0790832215. The cubic root of 420663344 is about 749.2812931302.

The spelling of 420663344 in words is "four hundred twenty million, six hundred sixty-three thousand, three hundred forty-four".