264786985 has 32 divisors (see below), whose sum is σ = 351630720. Its totient is φ = 190559232.

The previous prime is 264786967. The next prime is 264786989. The reversal of 264786985 is 589687462.

It is a cyclic number.

It is not a de Polignac number, because 264786985 - 2¹¹ = 264784937 is a prime.

It is a super-2 number, since 2×264786985² = 140224294850780450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (264786989) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 184842 + ... + 186268.

It is an arithmetic number, because the mean of its divisors is an integer number (10988460).

Almost surely, 2^264786985 is an apocalyptic number.

It is an amenable number.

264786985 is a deficient number, since it is larger than the sum of its proper divisors (86843735).

264786985 is a wasteful number, since it uses less digits than its factorization.

264786985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545.

The product of its digits is 5806080, while the sum is 55.

The square root of 264786985 is about 16272.2765770497. The cubic root of 264786985 is about 642.1436784368.

The spelling of 264786985 in words is "two hundred sixty-four million, seven hundred eighty-six thousand, nine hundred eighty-five".