6638532582 has 32 divisors (see below), whose sum is σ = 14667425280. Its totient is φ = 1986210720.

The previous prime is 6638532557. The next prime is 6638532611. The reversal of 6638532582 is 2852358366.

It is a super-2 number, since 2×6638532582² = 88140229684551173448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631393 + ... + 641820.

It is an arithmetic number, because the mean of its divisors is an integer number (458357040).

Almost surely, 2^6638532582 is an apocalyptic number.

6638532582 is an abundant number, since it is smaller than the sum of its proper divisors (8028892698).

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

6638532582 is a wasteful number, since it uses less digits than its factorization.

6638532582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273308.

The product of its digits is 2073600, while the sum is 48.

The square root of 6638532582 is about 81477.1905627581. The cubic root of 6638532582 is about 1879.4208059989.

It can be divided in two parts, 663853 and 2582, that added together give a triangular number (666435 = T₁₁₅₄).

The spelling of 6638532582 in words is "six billion, six hundred thirty-eight million, five hundred thirty-two thousand, five hundred eighty-two".