699923 has 4 divisors (see below), whose sum is σ = 799920. Its totient is φ = 599928.

The previous prime is 699863. The next prime is 699931. The reversal of 699923 is 329996.

699923 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 not a de Polignac number, because 699923 - 2¹⁰ = 698899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (699943) 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, 49988 + ... + 50001.

It is an arithmetic number, because the mean of its divisors is an integer number (199980).

2⁶⁹⁹⁹²³ is an apocalyptic number.

699923 is a deficient number, since it is larger than the sum of its proper divisors (99997).

699923 is an equidigital number, since it uses as much as digits as its factorization.

699923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99996.

The product of its digits is 26244, while the sum is 38.

The square root of 699923 is about 836.6140089671. The cubic root of 699923 is about 88.7871444069.

The spelling of 699923 in words is "six hundred ninety-nine thousand, nine hundred twenty-three".