244320613 has 4 divisors (see below), whose sum is σ = 244471500. Its totient is φ = 244169728.

The previous prime is 244320607. The next prime is 244320623. The reversal of 244320613 is 316023442.

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 123276609 + 121044004 = 11103^2 + 11002^2 .

It is a cyclic number.

It is not a de Polignac number, because 244320613 - 2⁵ = 244320581 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 (244320623) 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, 72988 + ... + 76261.

It is an arithmetic number, because the mean of its divisors is an integer number (61117875).

Almost surely, 2^244320613 is an apocalyptic number.

It is an amenable number.

244320613 is a deficient number, since it is larger than the sum of its proper divisors (150887).

244320613 is a wasteful number, since it uses less digits than its factorization.

244320613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150886.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 244320613 is about 15630.7585548495. The cubic root of 244320613 is about 625.1535520317.

The spelling of 244320613 in words is "two hundred forty-four million, three hundred twenty thousand, six hundred thirteen".