264523643 has 8 divisors (see below), whose sum is σ = 279456720. Its totient is φ = 249691680.

The previous prime is 264523631. The next prime is 264523657. The reversal of 264523643 is 346325462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 264523643 - 2⁴ = 264523627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264523663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19868 + ... + 30393.

It is an arithmetic number, because the mean of its divisors is an integer number (34932090).

Almost surely, 2^264523643 is an apocalyptic number.

264523643 is a deficient number, since it is larger than the sum of its proper divisors (14933077).

264523643 is a wasteful number, since it uses less digits than its factorization.

264523643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50557.

The product of its digits is 103680, while the sum is 35.

The square root of 264523643 is about 16264.1828260752. The cubic root of 264523643 is about 641.9307280259.

The spelling of 264523643 in words is "two hundred sixty-four million, five hundred twenty-three thousand, six hundred forty-three".