617513983 has 4 divisors (see below), whose sum is σ = 620283328. Its totient is φ = 614744640.

The previous prime is 617513977. The next prime is 617513989. The reversal of 617513983 is 389315716.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (617513977) and next prime (617513989).

It is a cyclic number.

It is not a de Polignac number, because 617513983 - 2¹⁷ = 617382911 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 (617513989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1384338 + ... + 1384783.

It is an arithmetic number, because the mean of its divisors is an integer number (155070832).

Almost surely, 2^617513983 is an apocalyptic number.

617513983 is a deficient number, since it is larger than the sum of its proper divisors (2769345).

617513983 is a wasteful number, since it uses less digits than its factorization.

617513983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769344.

The product of its digits is 136080, while the sum is 43.

The square root of 617513983 is about 24849.8286311999. The cubic root of 617513983 is about 851.5606773373.

The spelling of 617513983 in words is "six hundred seventeen million, five hundred thirteen thousand, nine hundred eighty-three".