491364617 has 8 divisors (see below), whose sum is σ = 542889216. Its totient is φ = 442353472.

The previous prime is 491364607. The next prime is 491364691. The reversal of 491364617 is 716463194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491364617 - 2⁶ = 491364553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491364607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627953 + ... + 628734.

It is an arithmetic number, because the mean of its divisors is an integer number (67861152).

Almost surely, 2^491364617 is an apocalyptic number.

It is an amenable number.

491364617 is a deficient number, since it is larger than the sum of its proper divisors (51524599).

491364617 is a wasteful number, since it uses less digits than its factorization.

491364617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256727.

The product of its digits is 108864, while the sum is 41.

The square root of 491364617 is about 22166.7457467261. The cubic root of 491364617 is about 789.1046936862.

The spelling of 491364617 in words is "four hundred ninety-one million, three hundred sixty-four thousand, six hundred seventeen".