5056820666 has 4 divisors (see below), whose sum is σ = 7585231002. Its totient is φ = 2528410332.

The previous prime is 5056820653. The next prime is 5056820707. The reversal of 5056820666 is 6660286505.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2795342641 + 2261478025 = 52871^2 + 47555^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264205165 + ... + 1264205168.

Almost surely, 2^5056820666 is an apocalyptic number.

5056820666 is a deficient number, since it is larger than the sum of its proper divisors (2528410336).

5056820666 is a wasteful number, since it uses less digits than its factorization.

5056820666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528410335.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 5056820666 is about 71111.3258630438. The cubic root of 5056820666 is about 1716.4290283090.

The spelling of 5056820666 in words is "five billion, fifty-six million, eight hundred twenty thousand, six hundred sixty-six".