523490647 has 2 divisors, whose sum is σ = 523490648. Its totient is φ = 523490646.

The previous prime is 523490633. The next prime is 523490683. The reversal of 523490647 is 746094325.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 523490647 - 2²³ = 515102039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523490347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261745323 + 261745324.

It is an arithmetic number, because the mean of its divisors is an integer number (261745324).

Almost surely, 2^523490647 is an apocalyptic number.

523490647 is a deficient number, since it is larger than the sum of its proper divisors (1).

523490647 is an equidigital number, since it uses as much as digits as its factorization.

523490647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 523490647 is about 22879.9179849929. The cubic root of 523490647 is about 805.9404910018.

The spelling of 523490647 in words is "five hundred twenty-three million, four hundred ninety thousand, six hundred forty-seven".