264040645 has 16 divisors (see below), whose sum is σ = 346129920. Its totient is φ = 191764800.

The previous prime is 264040633. The next prime is 264040657. The reversal of 264040645 is 546040462.

It is an interprime number because it is at equal distance from previous prime (264040633) and next prime (264040657).

It is a de Polignac number, because none of the positive numbers 2^k-264040645 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 42700 + ... + 48490.

It is an arithmetic number, because the mean of its divisors is an integer number (21633120).

Almost surely, 2^264040645 is an apocalyptic number.

It is an amenable number.

264040645 is a deficient number, since it is larger than the sum of its proper divisors (82089275).

264040645 is a wasteful number, since it uses less digits than its factorization.

264040645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6636.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 264040645 is about 16249.3275245470. The cubic root of 264040645 is about 641.5397860858.

The spelling of 264040645 in words is "two hundred sixty-four million, forty thousand, six hundred forty-five".