523649 has 8 divisors (see below), whose sum is σ = 602880. Its totient is φ = 445536.

The previous prime is 523639. The next prime is 523657. The reversal of 523649 is 946325.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 523649 - 2¹² = 519553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1517 + ... + 1829.

It is an arithmetic number, because the mean of its divisors is an integer number (75360).

2⁵²³⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

523649 is a deficient number, since it is larger than the sum of its proper divisors (79231).

523649 is a wasteful number, since it uses less digits than its factorization.

523649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559.

The product of its digits is 6480, while the sum is 29.

The square root of 523649 is about 723.6359582000. The cubic root of 523649 is about 80.6021746976.

The spelling of 523649 in words is "five hundred twenty-three thousand, six hundred forty-nine".