623479 has 4 divisors (see below), whose sum is σ = 627760. Its totient is φ = 619200.

The previous prime is 623477. The next prime is 623521. The reversal of 623479 is 974326.

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 623479 - 2¹ = 623477 is a prime.

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 623479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623477) 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 3 ways as a sum of consecutive naturals, for example, 1914 + ... + 2215.

It is an arithmetic number, because the mean of its divisors is an integer number (156940).

2⁶²³⁴⁷⁹ is an apocalyptic number.

623479 is a deficient number, since it is larger than the sum of its proper divisors (4281).

623479 is a wasteful number, since it uses less digits than its factorization.

623479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280.

The product of its digits is 9072, while the sum is 31.

The square root of 623479 is about 789.6068642052. The cubic root of 623479 is about 85.4293843712.

The spelling of 623479 in words is "six hundred twenty-three thousand, four hundred seventy-nine".