264694989 has 16 divisors (see below), whose sum is σ = 384350400. Its totient is φ = 161056896.

The previous prime is 264694987. The next prime is 264695009. The reversal of 264694989 is 989496462.

It is not a de Polignac number, because 264694989 - 2¹ = 264694987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264694987) 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, 34659 + ... + 41600.

It is an arithmetic number, because the mean of its divisors is an integer number (24021900).

Almost surely, 2^264694989 is an apocalyptic number.

It is an amenable number.

264694989 is a deficient number, since it is larger than the sum of its proper divisors (119655411).

264694989 is a wasteful number, since it uses less digits than its factorization.

264694989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76364.

The product of its digits is 6718464, while the sum is 57.

The square root of 264694989 is about 16269.4495604492. The cubic root of 264694989 is about 642.0693023080.

The spelling of 264694989 in words is "two hundred sixty-four million, six hundred ninety-four thousand, nine hundred eighty-nine".