617492867 has 4 divisors (see below), whose sum is σ = 617927016. Its totient is φ = 617058720.

The previous prime is 617492849. The next prime is 617492929. The reversal of 617492867 is 768294716.

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 617492867 - 2⁸ = 617492611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (617492807) 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, 214934 + ... + 217787.

It is an arithmetic number, because the mean of its divisors is an integer number (154481754).

Almost surely, 2^617492867 is an apocalyptic number.

617492867 is a deficient number, since it is larger than the sum of its proper divisors (434149).

617492867 is a wasteful number, since it uses less digits than its factorization.

617492867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434148.

The product of its digits is 1016064, while the sum is 50.

The square root of 617492867 is about 24849.4037554224. The cubic root of 617492867 is about 851.5509708039.

The spelling of 617492867 in words is "six hundred seventeen million, four hundred ninety-two thousand, eight hundred sixty-seven".