623706 has 8 divisors (see below), whose sum is σ = 1247424. Its totient is φ = 207900.

The previous prime is 623699. The next prime is 623717. The reversal of 623706 is 607326.

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

623706 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

623706 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 3 ways as a sum of consecutive naturals, for example, 51970 + ... + 51981.

It is an arithmetic number, because the mean of its divisors is an integer number (155928).

2⁶²³⁷⁰⁶ is an apocalyptic number.

623706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623706 is a wasteful number, since it uses less digits than its factorization.

623706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103956.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 623706 is about 789.7505935420. The cubic root of 623706 is about 85.4397509952.

The spelling of 623706 in words is "six hundred twenty-three thousand, seven hundred six".