264799890 has 24 divisors (see below), whose sum is σ = 688479948. Its totient is φ = 70613280.

The previous prime is 264799889. The next prime is 264799907. The reversal of 264799890 is 98997462.

It can be written as a sum of positive squares in 2 ways, for example, as 264485169 + 314721 = 16263^2 + 561^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1471021 + ... + 1471200.

Almost surely, 2^264799890 is an apocalyptic number.

264799890 is an abundant number, since it is smaller than the sum of its proper divisors (423680058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264799890 is a wasteful number, since it uses less digits than its factorization.

264799890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942234 (or 2942231 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 264799890 is about 16272.6731055472. The cubic root of 264799890 is about 642.1541103815.

The spelling of 264799890 in words is "two hundred sixty-four million, seven hundred ninety-nine thousand, eight hundred ninety".