264642345 has 24 divisors (see below), whose sum is σ = 500415552. Its totient is φ = 128311200.

The previous prime is 264642311. The next prime is 264642353. The reversal of 264642345 is 543246462.

264642345 is a `hidden beast` number, since 2 + 6 + 4 + 642 + 3 + 4 + 5 = 666.

It is not a de Polignac number, because 264642345 - 2⁹ = 264641833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266821 + ... + 267810.

It is an arithmetic number, because the mean of its divisors is an integer number (20850648).

Almost surely, 2^264642345 is an apocalyptic number.

It is an amenable number.

264642345 is a deficient number, since it is larger than the sum of its proper divisors (235773207).

264642345 is a wasteful number, since it uses less digits than its factorization.

264642345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534653 (or 534650 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 264642345 is about 16267.8316010463. The cubic root of 264642345 is about 642.0267333905.

The spelling of 264642345 in words is "two hundred sixty-four million, six hundred forty-two thousand, three hundred forty-five".