5665966 has 4 divisors (see below), whose sum is σ = 8498952. Its totient is φ = 2832982.

The previous prime is 5665949. The next prime is 5665967. The reversal of 5665966 is 6695665.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665967) 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 as a sum of consecutive naturals, namely, 1416490 + ... + 1416493.

It is an arithmetic number, because the mean of its divisors is an integer number (2124738).

Almost surely, 2^5665966 is an apocalyptic number.

5665966 is a deficient number, since it is larger than the sum of its proper divisors (2832986).

5665966 is a wasteful number, since it uses less digits than its factorization.

5665966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832985.

The product of its digits is 291600, while the sum is 43.

The square root of 5665966 is about 2380.3289688612. The cubic root of 5665966 is about 178.2753596943.

The spelling of 5665966 in words is "five million, six hundred sixty-five thousand, nine hundred sixty-six".