264351217 has 4 divisors (see below), whose sum is σ = 284685940. Its totient is φ = 244016496.

The previous prime is 264351209. The next prime is 264351223. The reversal of 264351217 is 712153462.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14205361 + 250145856 = 3769^2 + 15816^2 .

It is a cyclic number.

It is not a de Polignac number, because 264351217 - 2³ = 264351209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264351257) 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 3 ways as a sum of consecutive naturals, for example, 10167342 + ... + 10167367.

It is an arithmetic number, because the mean of its divisors is an integer number (71171485).

Almost surely, 2^264351217 is an apocalyptic number.

It is an amenable number.

264351217 is a deficient number, since it is larger than the sum of its proper divisors (20334723).

264351217 is a wasteful number, since it uses less digits than its factorization.

264351217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20334722.

The product of its digits is 10080, while the sum is 31.

The square root of 264351217 is about 16258.8811730697. The cubic root of 264351217 is about 641.7912198837.

The spelling of 264351217 in words is "two hundred sixty-four million, three hundred fifty-one thousand, two hundred seventeen".