264878743 has 4 divisors (see below), whose sum is σ = 266410008. Its totient is φ = 263347480.

The previous prime is 264878729. The next prime is 264878759. The reversal of 264878743 is 347878462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347878462 = 2 ⋅173939231.

It is a cyclic number.

It is not a de Polignac number, because 264878743 - 2⁵ = 264878711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264878443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765373 + ... + 765718.

It is an arithmetic number, because the mean of its divisors is an integer number (66602502).

Almost surely, 2^264878743 is an apocalyptic number.

264878743 is a deficient number, since it is larger than the sum of its proper divisors (1531265).

264878743 is a wasteful number, since it uses less digits than its factorization.

264878743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531264.

The product of its digits is 1806336, while the sum is 49.

The square root of 264878743 is about 16275.0957908087. The cubic root of 264878743 is about 642.2178449910.

The spelling of 264878743 in words is "two hundred sixty-four million, eight hundred seventy-eight thousand, seven hundred forty-three".