6566032440 has 96 divisors (see below), whose sum is σ = 23279583600. Its totient is φ = 1591764480.

The previous prime is 6566032439. The next prime is 6566032463. The reversal of 6566032440 is 442306656.

6566032440 is a `hidden beast` number, since 6 + 5 + 6 + 603 + 2 + 4 + 40 = 666.

It is a super-2 number, since 2×6566032440² = 86225564006264707200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6566032395 and 6566032404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 825085 + ... + 833004.

Almost surely, 2^6566032440 is an apocalyptic number.

6566032440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6566032440 is an abundant number, since it is smaller than the sum of its proper divisors (16713551160).

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

6566032440 is a wasteful number, since it uses less digits than its factorization.

6566032440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658117 (or 1658110 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 6566032440 is about 81031.0584899395. The cubic root of 6566032440 is about 1872.5539602621.

The spelling of 6566032440 in words is "six billion, five hundred sixty-six million, thirty-two thousand, four hundred forty".