264197563 has 12 divisors (see below), whose sum is σ = 314830152. Its totient is φ = 220930080.

The previous prime is 264197539. The next prime is 264197581. The reversal of 264197563 is 365791462.

It is not a de Polignac number, because 264197563 - 2²¹ = 262100411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (264197533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63745 + ... + 67762.

It is an arithmetic number, because the mean of its divisors is an integer number (26235846).

Almost surely, 2^264197563 is an apocalyptic number.

264197563 is a deficient number, since it is larger than the sum of its proper divisors (50632589).

264197563 is a wasteful number, since it uses less digits than its factorization.

264197563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131562 (or 131555 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 264197563 is about 16254.1552533498. The cubic root of 264197563 is about 641.6668488521. Note that the first 3 decimals are identical.

The spelling of 264197563 in words is "two hundred sixty-four million, one hundred ninety-seven thousand, five hundred sixty-three".