523263647 has 4 divisors (see below), whose sum is σ = 533136600. Its totient is φ = 513390696.

The previous prime is 523263641. The next prime is 523263661. The reversal of 523263647 is 746362325.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 523263647 - 2¹² = 523259551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 523263647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523263641) 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, 4936397 + ... + 4936502.

It is an arithmetic number, because the mean of its divisors is an integer number (133284150).

Almost surely, 2^523263647 is an apocalyptic number.

523263647 is a deficient number, since it is larger than the sum of its proper divisors (9872953).

523263647 is an equidigital number, since it uses as much as digits as its factorization.

523263647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9872952.

The product of its digits is 181440, while the sum is 38.

The square root of 523263647 is about 22874.9567649865. The cubic root of 523263647 is about 805.8239814756.

The spelling of 523263647 in words is "five hundred twenty-three million, two hundred sixty-three thousand, six hundred forty-seven".