5665731 has 8 divisors (see below), whose sum is σ = 7572480. Its totient is φ = 3768072.

The previous prime is 5665703. The next prime is 5665733. The reversal of 5665731 is 1375665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5665731 - 2¹⁰ = 5664707 is a prime.

It is a super-2 number, since 2×5665731² = 64201015528722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5665692 and 5665701.

It is not an unprimeable number, because it can be changed into a prime (5665733) 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 7 ways as a sum of consecutive naturals, for example, 651 + ... + 3428.

It is an arithmetic number, because the mean of its divisors is an integer number (946560).

Almost surely, 2^5665731 is an apocalyptic number.

5665731 is a deficient number, since it is larger than the sum of its proper divisors (1906749).

5665731 is a wasteful number, since it uses less digits than its factorization.

5665731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545.

The product of its digits is 18900, while the sum is 33.

The square root of 5665731 is about 2380.2796054245. The cubic root of 5665731 is about 178.2728949608.

The spelling of 5665731 in words is "five million, six hundred sixty-five thousand, seven hundred thirty-one".