623707 has 4 divisors (see below), whose sum is σ = 712816. Its totient is φ = 534600.

The previous prime is 623699. The next prime is 623717. The reversal of 623707 is 707326.

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 623707 - 2³ = 623699 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623717) 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, 44544 + ... + 44557.

It is an arithmetic number, because the mean of its divisors is an integer number (178204).

2⁶²³⁷⁰⁷ is an apocalyptic number.

623707 is a deficient number, since it is larger than the sum of its proper divisors (89109).

623707 is an equidigital number, since it uses as much as digits as its factorization.

623707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89108.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 623707 is about 789.7512266531. The cubic root of 623707 is about 85.4397966576.

The spelling of 623707 in words is "six hundred twenty-three thousand, seven hundred seven".