264999999 has 16 divisors (see below), whose sum is σ = 398747520. Its totient is φ = 155067360.

The previous prime is 264999983. The next prime is 265000007. The reversal of 264999999 is 999999462.

It is not a de Polignac number, because 264999999 - 2⁴ = 264999983 is a prime.

264999999 is a modest number, since divided by 99999 gives 2649 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264999599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137497 + ... + 139410.

It is an arithmetic number, because the mean of its divisors is an integer number (24921720).

Almost surely, 2^264999999 is an apocalyptic number.

264999999 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

264999999 is a deficient number, since it is larger than the sum of its proper divisors (133747521).

264999999 is a wasteful number, since it uses less digits than its factorization.

264999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276950.

The product of its digits is 25509168, while the sum is 66.

The square root of 264999999 is about 16278.8205653850. The cubic root of 264999999 is about 642.3158280483.

The spelling of 264999999 in words is "two hundred sixty-four million, nine hundred ninety-nine thousand, nine hundred ninety-nine".