264085861 has 16 divisors (see below), whose sum is σ = 297964800. Its totient is φ = 232360128.

The previous prime is 264085853. The next prime is 264085889. The reversal of 264085861 is 168580462.

It is not a de Polignac number, because 264085861 - 2³ = 264085853 is a prime.

It is a super-2 number, since 2×264085861² = 139482683960222642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264035861) 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 15 ways as a sum of consecutive naturals, for example, 25350 + ... + 34216.

It is an arithmetic number, because the mean of its divisors is an integer number (18622800).

Almost surely, 2^264085861 is an apocalyptic number.

It is an amenable number.

264085861 is a deficient number, since it is larger than the sum of its proper divisors (33878939).

264085861 is a wasteful number, since it uses less digits than its factorization.

264085861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8988.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 264085861 is about 16250.7187841031. The cubic root of 264085861 is about 641.5764044472.

The spelling of 264085861 in words is "two hundred sixty-four million, eighty-five thousand, eight hundred sixty-one".