523643006 has 4 divisors (see below), whose sum is σ = 785464512. Its totient is φ = 261821502.

The previous prime is 523642997. The next prime is 523643009. The reversal of 523643006 is 600346325.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 523643006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523643009) 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 as a sum of consecutive naturals, namely, 130910750 + ... + 130910753.

It is an arithmetic number, because the mean of its divisors is an integer number (196366128).

Almost surely, 2^523643006 is an apocalyptic number.

523643006 is a deficient number, since it is larger than the sum of its proper divisors (261821506).

523643006 is a wasteful number, since it uses less digits than its factorization.

523643006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261821505.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 523643006 is about 22883.2472783038. The cubic root of 523643006 is about 806.0186715622.

The spelling of 523643006 in words is "five hundred twenty-three million, six hundred forty-three thousand, six".