264909805 has 8 divisors (see below), whose sum is σ = 318200544. Its totient is φ = 211722000.

The previous prime is 264909803. The next prime is 264909811. The reversal of 264909805 is 508909462.

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

It is not a de Polignac number, because 264909805 - 2¹ = 264909803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264909803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19951 + ... + 30460.

It is an arithmetic number, because the mean of its divisors is an integer number (39775068).

Almost surely, 2^264909805 is an apocalyptic number.

It is an amenable number.

264909805 is a deficient number, since it is larger than the sum of its proper divisors (53290739).

264909805 is a wasteful number, since it uses less digits than its factorization.

264909805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51467.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 264909805 is about 16276.0500429312. The cubic root of 264909805 is about 642.2429480384.

The spelling of 264909805 in words is "two hundred sixty-four million, nine hundred nine thousand, eight hundred five".