5066661 has 4 divisors (see below), whose sum is σ = 6755552. Its totient is φ = 3377772.

The previous prime is 5066653. The next prime is 5066683. The reversal of 5066661 is 1666605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5066661 - 2³ = 5066653 is a prime.

It is a D-number.

It is a Duffinian number.

5066661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5066161) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 844441 + ... + 844446.

It is an arithmetic number, because the mean of its divisors is an integer number (1688888).

Almost surely, 2^5066661 is an apocalyptic number.

It is an amenable number.

5066661 is a deficient number, since it is larger than the sum of its proper divisors (1688891).

5066661 is a wasteful number, since it uses less digits than its factorization.

5066661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688890.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 5066661 is about 2250.9244767428. The cubic root of 5066661 is about 171.7541670158.

The spelling of 5066661 in words is "five million, sixty-six thousand, six hundred sixty-one".