5996665 has 8 divisors (see below), whose sum is σ = 7619400. Its totient is φ = 4515072.

The previous prime is 5996657. The next prime is 5996677. The reversal of 5996665 is 5666995.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3052009 + 2944656 = 1747^2 + 1716^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5996665 - 2³ = 5996657 is a prime.

It is a super-2 number, since 2×5996665² = 71919982244450, which contains 22 as substring.

It is an Ulam number.

5996665 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35190 + ... + 35359.

It is an arithmetic number, because the mean of its divisors is an integer number (952425).

Almost surely, 2^5996665 is an apocalyptic number.

It is an amenable number.

5996665 is a deficient number, since it is larger than the sum of its proper divisors (1622735).

5996665 is a wasteful number, since it uses less digits than its factorization.

5996665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70571.

The product of its digits is 437400, while the sum is 46.

The square root of 5996665 is about 2448.8088941361. The cubic root of 5996665 is about 181.6783858370.

It can be divided in two parts, 59966 and 65, that added together give a triangular number (60031 = T₃₄₆).

The spelling of 5996665 in words is "five million, nine hundred ninety-six thousand, six hundred sixty-five".