3286666691 has 8 divisors (see below), whose sum is σ = 4097662464. Its totient is φ = 2561038920.

The previous prime is 3286666597. The next prime is 3286666699. The reversal of 3286666691 is 1966666823.

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

It is a de Polignac number, because none of the positive numbers 2^k-3286666691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3286666699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21341915 + ... + 21342068.

It is an arithmetic number, because the mean of its divisors is an integer number (512207808).

Almost surely, 2^3286666691 is an apocalyptic number.

3286666691 is a deficient number, since it is larger than the sum of its proper divisors (810995773).

3286666691 is a wasteful number, since it uses less digits than its factorization.

3286666691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42684001.

The product of its digits is 3359232, while the sum is 53.

The square root of 3286666691 is about 57329.4574455402. The cubic root of 3286666691 is about 1486.7977247156.

The spelling of 3286666691 in words is "three billion, two hundred eighty-six million, six hundred sixty-six thousand, six hundred ninety-one".