6666031 has 8 divisors (see below), whose sum is σ = 6950960. Its totient is φ = 6386688.

The previous prime is 6666029. The next prime is 6666047. The reversal of 6666031 is 1306666.

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 6666031 - 2¹ = 6666029 is a prime.

It is a super-2 number, since 2×6666031² = 88871938585922, which contains 22 as substring.

It is a Duffinian number.

6666031 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135 + ... + 3823.

It is an arithmetic number, because the mean of its divisors is an integer number (868870).

Almost surely, 2^6666031 is an apocalyptic number.

6666031 is a deficient number, since it is larger than the sum of its proper divisors (284929).

6666031 is a wasteful number, since it uses less digits than its factorization.

6666031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 6666031 is about 2581.8657982165. The cubic root of 6666031 is about 188.2012237337.

The spelling of 6666031 in words is "six million, six hundred sixty-six thousand, thirty-one".