5666728450 has 24 divisors (see below), whose sum is σ = 10556617860. Its totient is φ = 2263142400.

The previous prime is 5666728433. The next prime is 5666728489. The reversal of 5666728450 is 548276665.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3912877809 + 1753850641 = 62553^2 + 41879^2 .

It is a super-2 number, since 2×5666728450² = 64223622652078805000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (49) 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 = 5666728394 and 5666728403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56355 + ... + 120454.

Almost surely, 2^5666728450 is an apocalyptic number.

5666728450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5666728450 is a deficient number, since it is larger than the sum of its proper divisors (4889889410).

5666728450 is a wasteful number, since it uses less digits than its factorization.

5666728450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177462 (or 177457 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 49.

The square root of 5666728450 is about 75277.6756415871. The cubic root of 5666728450 is about 1782.8335597425.

The spelling of 5666728450 in words is "five billion, six hundred sixty-six million, seven hundred twenty-eight thousand, four hundred fifty".