820386023 has 4 divisors (see below), whose sum is σ = 820969680. Its totient is φ = 819802368.

The previous prime is 820386001. The next prime is 820386067. The reversal of 820386023 is 320683028.

It is a happy number.

820386023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 820386023 - 2²⁴ = 803608807 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820386823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289715 + ... + 292532.

It is an arithmetic number, because the mean of its divisors is an integer number (205242420).

Almost surely, 2^820386023 is an apocalyptic number.

820386023 is a deficient number, since it is larger than the sum of its proper divisors (583657).

820386023 is a wasteful number, since it uses less digits than its factorization.

820386023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583656.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 820386023 is about 28642.3815874309. The cubic root of 820386023 is about 936.1370147726.

The spelling of 820386023 in words is "eight hundred twenty million, three hundred eighty-six thousand, twenty-three".