523647 has 12 divisors (see below), whose sum is σ = 766584. Its totient is φ = 344400.

The previous prime is 523639. The next prime is 523657. The reversal of 523647 is 746325.

It is a happy number.

It is not a de Polignac number, because 523647 - 2³ = 523639 is a prime.

523647 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 523647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523637) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 397 + ... + 1097.

It is an arithmetic number, because the mean of its divisors is an integer number (63882).

2⁵²³⁶⁴⁷ is an apocalyptic number.

523647 is a deficient number, since it is larger than the sum of its proper divisors (242937).

523647 is a wasteful number, since it uses less digits than its factorization.

523647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 787 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 523647 is about 723.6345762883. The cubic root of 523647 is about 80.6020720815.

The spelling of 523647 in words is "five hundred twenty-three thousand, six hundred forty-seven".