623530417 has 4 divisors (see below), whose sum is σ = 623609856. Its totient is φ = 623450980.

The previous prime is 623530399. The next prime is 623530447. The reversal of 623530417 is 714035326.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 623530417 - 2¹⁵ = 623497649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623530447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26473 + ... + 44134.

It is an arithmetic number, because the mean of its divisors is an integer number (155902464).

Almost surely, 2^623530417 is an apocalyptic number.

It is an amenable number.

623530417 is a deficient number, since it is larger than the sum of its proper divisors (79439).

623530417 is an equidigital number, since it uses as much as digits as its factorization.

623530417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79438.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 623530417 is about 24970.5910422641. The cubic root of 623530417 is about 854.3173270040.

The spelling of 623530417 in words is "six hundred twenty-three million, five hundred thirty thousand, four hundred seventeen".