264649471 has 4 divisors (see below), whose sum is σ = 264999832. Its totient is φ = 264299112.

The previous prime is 264649459. The next prime is 264649481. The reversal of 264649471 is 174946462.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264649471 is a prime.

It is a super-3 number, since 3×264649471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264649481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174045 + ... + 175558.

It is an arithmetic number, because the mean of its divisors is an integer number (66249958).

Almost surely, 2^264649471 is an apocalyptic number.

264649471 is a deficient number, since it is larger than the sum of its proper divisors (350361).

264649471 is an equidigital number, since it uses as much as digits as its factorization.

264649471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350360.

The product of its digits is 290304, while the sum is 43.

The square root of 264649471 is about 16268.0506207720. The cubic root of 264649471 is about 642.0324959370.

The spelling of 264649471 in words is "two hundred sixty-four million, six hundred forty-nine thousand, four hundred seventy-one".