6634533440 has 56 divisors (see below), whose sum is σ = 15815398392. Its totient is φ = 2650972160.

The previous prime is 6634533439. The next prime is 6634533473. The reversal of 6634533440 is 443354366.

It can be written as a sum of positive squares in 4 ways, for example, as 3957919744 + 2676613696 = 62912^2 + 51736^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6634533394 and 6634533403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302030 + ... + 323250.

Almost surely, 2^6634533440 is an apocalyptic number.

It is an amenable number.

6634533440 is an abundant number, since it is smaller than the sum of its proper divisors (9180864952).

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

6634533440 is a wasteful number, since it uses less digits than its factorization.

6634533440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22215 (or 22205 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 38.

The square root of 6634533440 is about 81452.6453836829. The cubic root of 6634533440 is about 1879.0433340022.

The spelling of 6634533440 in words is "six billion, six hundred thirty-four million, five hundred thirty-three thousand, four hundred forty".