823526 has 24 divisors (see below), whose sum is σ = 1407672. Its totient is φ = 360800.

The previous prime is 823519. The next prime is 823541. The reversal of 823526 is 625328.

It is a nialpdrome in base 7.

It is a zygodrome in base 3 and base 7.

It is a junction number, because it is equal to n+sod(n) for n = 823495 and 823504.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 823526.

It is an unprimeable number.

823526 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9881 + ... + 9963.

It is an arithmetic number, because the mean of its divisors is an integer number (58653).

2⁸²³⁵²⁶ is an apocalyptic number.

823526 is a deficient number, since it is larger than the sum of its proper divisors (584146).

823526 is a wasteful number, since it uses less digits than its factorization.

823526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 137 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 823526 is about 907.4833331803. The cubic root of 823526 is about 93.7329829854.

The spelling of 823526 in words is "eight hundred twenty-three thousand, five hundred twenty-six".