617609123 has 4 divisors (see below), whose sum is σ = 625427040. Its totient is φ = 609791208.

The previous prime is 617609081. The next prime is 617609137. The reversal of 617609123 is 321906716.

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 617609123 - 2⁸ = 617608867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (617609173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3908840 + ... + 3908997.

It is an arithmetic number, because the mean of its divisors is an integer number (156356760).

Almost surely, 2^617609123 is an apocalyptic number.

617609123 is a deficient number, since it is larger than the sum of its proper divisors (7817917).

617609123 is an equidigital number, since it uses as much as digits as its factorization.

617609123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7817916.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 617609123 is about 24851.7428563874. The cubic root of 617609123 is about 851.6044082350.

The spelling of 617609123 in words is "six hundred seventeen million, six hundred nine thousand, one hundred twenty-three".