6665583047 has 4 divisors (see below), whose sum is σ = 6734300496. Its totient is φ = 6596865600.

The previous prime is 6665582953. The next prime is 6665583121. The reversal of 6665583047 is 7403855666.

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

It is a cyclic number.

It is not a de Polignac number, because 6665583047 - 2¹⁶ = 6665517511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6665582986 and 6665583004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665588047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34358579 + ... + 34358772.

It is an arithmetic number, because the mean of its divisors is an integer number (1683575124).

Almost surely, 2^6665583047 is an apocalyptic number.

6665583047 is a deficient number, since it is larger than the sum of its proper divisors (68717449).

6665583047 is an equidigital number, since it uses as much as digits as its factorization.

6665583047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68717448.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The square root of 6665583047 is about 81643.0220349541. The cubic root of 6665583047 is about 1881.9700797218.

The spelling of 6665583047 in words is "six billion, six hundred sixty-five million, five hundred eighty-three thousand, forty-seven".