633988485 has 64 divisors (see below), whose sum is σ = 1277740800. Its totient is φ = 295674624.

The previous prime is 633988483. The next prime is 633988489. The reversal of 633988485 is 584889336.

It is a happy number.

633988485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 633988485 - 2¹ = 633988483 is a prime.

It is a super-2 number, since 2×633988485² = 803882798225190450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633988483) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23839 + ... + 42851.

It is an arithmetic number, because the mean of its divisors is an integer number (19964700).

Almost surely, 2^633988485 is an apocalyptic number.

633988485 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

633988485 is an abundant number, since it is smaller than the sum of its proper divisors (643752315).

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

633988485 is a wasteful number, since it uses less digits than its factorization.

633988485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19059 (or 19053 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 633988485 is about 25179.1279634542. The cubic root of 633988485 is about 859.0671717943.

The spelling of 633988485 in words is "six hundred thirty-three million, nine hundred eighty-eight thousand, four hundred eighty-five".