623205041 has 4 divisors (see below), whose sum is σ = 644694900. Its totient is φ = 601715184.

The previous prime is 623205031. The next prime is 623205049. The reversal of 623205041 is 140502326.

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

It can be written as a sum of positive squares in 2 ways, for example, as 150577441 + 472627600 = 12271^2 + 21740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623205041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 623204998 and 623205016.

It is not an unprimeable number, because it can be changed into a prime (623205049) 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, 10744886 + ... + 10744943.

It is an arithmetic number, because the mean of its divisors is an integer number (161173725).

Almost surely, 2^623205041 is an apocalyptic number.

It is an amenable number.

623205041 is a deficient number, since it is larger than the sum of its proper divisors (21489859).

623205041 is a wasteful number, since it uses less digits than its factorization.

623205041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21489858.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 623205041 is about 24964.0750078989. The cubic root of 623205041 is about 854.1686987454.

Adding to 623205041 its reverse (140502326), we get a palindrome (763707367).

The spelling of 623205041 in words is "six hundred twenty-three million, two hundred five thousand, forty-one".