723827 has 6 divisors (see below), whose sum is σ = 783972. Its totient is φ = 667992.

The previous prime is 723823. The next prime is 723829. The reversal of 723827 is 728327.

It is not a de Polignac number, because 723827 - 2² = 723823 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 723827.

It is not an unprimeable number, because it can be changed into a prime (723823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1973 + ... + 2310.

It is an arithmetic number, because the mean of its divisors is an integer number (130662).

2⁷²³⁸²⁷ is an apocalyptic number.

723827 is a deficient number, since it is larger than the sum of its proper divisors (60145).

723827 is a wasteful number, since it uses less digits than its factorization.

723827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309 (or 4296 counting only the distinct ones).

The product of its digits is 4704, while the sum is 29.

The square root of 723827 is about 850.7802301417. The cubic root of 723827 is about 89.7866138118.

The spelling of 723827 in words is "seven hundred twenty-three thousand, eight hundred twenty-seven".