6699331 has 4 divisors (see below), whose sum is σ = 6880432. Its totient is φ = 6518232.

The previous prime is 6699311. The next prime is 6699337. The reversal of 6699331 is 1339966.

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

It is a cyclic number.

It is not a de Polignac number, because 6699331 - 2¹¹ = 6697283 is a prime.

It is a super-2 number, since 2×6699331² = 89762071695122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 181063 = 6699331 / (6 + 6 + 9 + 9 + 3 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6699337) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 90495 + ... + 90568.

It is an arithmetic number, because the mean of its divisors is an integer number (1720108).

Almost surely, 2^6699331 is an apocalyptic number.

6699331 is a deficient number, since it is larger than the sum of its proper divisors (181101).

6699331 is a wasteful number, since it uses less digits than its factorization.

6699331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181100.

The product of its digits is 26244, while the sum is 37.

The square root of 6699331 is about 2588.3065892587. The cubic root of 6699331 is about 188.5140882603.

It can be divided in two parts, 669 and 9331, that added together give a 4-th power (10000 = 10⁴).

The spelling of 6699331 in words is "six million, six hundred ninety-nine thousand, three hundred thirty-one".