633221672 has 16 divisors (see below), whose sum is σ = 1195959060. Its totient is φ = 314299264.

The previous prime is 633221653. The next prime is 633221707. The reversal of 633221672 is 276122336.

It can be written as a sum of positive squares in 2 ways, for example, as 630311236 + 2910436 = 25106^2 + 1706^2 .

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, 287783 + ... + 289974.

Almost surely, 2^633221672 is an apocalyptic number.

It is an amenable number.

633221672 is a deficient number, since it is larger than the sum of its proper divisors (562737388).

633221672 is a wasteful number, since it uses less digits than its factorization.

633221672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577900 (or 577896 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 633221672 is about 25163.8962007079. The cubic root of 633221672 is about 858.7206830413.

The spelling of 633221672 in words is "six hundred thirty-three million, two hundred twenty-one thousand, six hundred seventy-two".