264196891 has 8 divisors (see below), whose sum is σ = 307636704. Its totient is φ = 222181440.

The previous prime is 264196861. The next prime is 264196903. The reversal of 264196891 is 198691462.

It is a happy number.

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 264196891 - 2⁷ = 264196763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264196811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355690 + ... + 356431.

It is an arithmetic number, because the mean of its divisors is an integer number (38454588).

Almost surely, 2^264196891 is an apocalyptic number.

264196891 is a deficient number, since it is larger than the sum of its proper divisors (43439813).

264196891 is an equidigital number, since it uses as much as digits as its factorization.

264196891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712181.

The product of its digits is 186624, while the sum is 46.

The square root of 264196891 is about 16254.1345816995. The cubic root of 264196891 is about 641.6663048142. Note that the first 3 decimals are identical.

The spelling of 264196891 in words is "two hundred sixty-four million, one hundred ninety-six thousand, eight hundred ninety-one".