663219476 has 12 divisors (see below), whose sum is σ = 1167047700. Its totient is φ = 329777280.

The previous prime is 663219437. The next prime is 663219481. The reversal of 663219476 is 674912366.

It can be written as a sum of positive squares in 2 ways, for example, as 15007876 + 648211600 = 3874^2 + 25460^2 .

It is a congruent number.

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, 457301 + ... + 458748.

It is an arithmetic number, because the mean of its divisors is an integer number (97253975).

Almost surely, 2^663219476 is an apocalyptic number.

It is an amenable number.

663219476 is a deficient number, since it is larger than the sum of its proper divisors (503828224).

663219476 is a wasteful number, since it uses less digits than its factorization.

663219476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916234 (or 916232 counting only the distinct ones).

The product of its digits is 326592, while the sum is 44.

The square root of 663219476 is about 25753.0478972878. The cubic root of 663219476 is about 872.0721628269.

The spelling of 663219476 in words is "six hundred sixty-three million, two hundred nineteen thousand, four hundred seventy-six".