264999645 has 12 divisors (see below), whose sum is σ = 459332796. Its totient is φ = 141333120.

The previous prime is 264999643. The next prime is 264999667. The reversal of 264999645 is 546999462.

It is a happy number.

264999645 is a `hidden beast` number, since 26 + 499 + 96 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 177502329 + 87497316 = 13323^2 + 9354^2 .

It is not a de Polignac number, because 264999645 - 2¹ = 264999643 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 264999591 and 264999600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264999643) 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, 2944396 + ... + 2944485.

It is an arithmetic number, because the mean of its divisors is an integer number (38277733).

Almost surely, 2^264999645 is an apocalyptic number.

It is an amenable number.

264999645 is a deficient number, since it is larger than the sum of its proper divisors (194333151).

264999645 is a wasteful number, since it uses less digits than its factorization.

264999645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5888892 (or 5888889 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 264999645 is about 16278.8096923577. The cubic root of 264999645 is about 642.3155420358.

The spelling of 264999645 in words is "two hundred sixty-four million, nine hundred ninety-nine thousand, six hundred forty-five".