623505301 has 4 divisors (see below), whose sum is σ = 624117004. Its totient is φ = 622893600.

The previous prime is 623505299. The next prime is 623505313. The reversal of 623505301 is 103505326.

It is a happy number.

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 229522500 + 393982801 = 15150^2 + 19849^2 .

It is a cyclic number.

It is not a de Polignac number, because 623505301 - 2¹ = 623505299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623505331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304320 + ... + 306361.

It is an arithmetic number, because the mean of its divisors is an integer number (156029251).

Almost surely, 2^623505301 is an apocalyptic number.

It is an amenable number.

623505301 is a deficient number, since it is larger than the sum of its proper divisors (611703).

623505301 is a wasteful number, since it uses less digits than its factorization.

623505301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611702.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 623505301 is about 24970.0881255954. The cubic root of 623505301 is about 854.3058561271.

Adding to 623505301 its sum of digits (25), we get a palindrome (623505326).

The spelling of 623505301 in words is "six hundred twenty-three million, five hundred five thousand, three hundred one".