617694687107 has 4 divisors (see below), whose sum is σ = 617791922280. Its totient is φ = 617597451936.

The previous prime is 617694687079. The next prime is 617694687131. The reversal of 617694687107 is 701786496716.

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 617694687107 - 2¹⁶ = 617694621571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 617694687107.

It is not an unprimeable number, because it can be changed into a prime (617694687187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48608057 + ... + 48620762.

It is an arithmetic number, because the mean of its divisors is an integer number (154447980570).

Almost surely, 2^617694687107 is an apocalyptic number.

617694687107 is a deficient number, since it is larger than the sum of its proper divisors (97235173).

617694687107 is an equidigital number, since it uses as much as digits as its factorization.

617694687107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97235172.

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 617694687107 in words is "six hundred seventeen billion, six hundred ninety-four million, six hundred eighty-seven thousand, one hundred seven".