491607727 has 8 divisors (see below), whose sum is σ = 552442464. Its totient is φ = 434061408.

The previous prime is 491607709. The next prime is 491607749. The reversal of 491607727 is 727706194.

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 491607727 - 2¹⁵ = 491574959 is a prime.

It is a super-2 number, since 2×491607727² = 483356314492213058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491607527) 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, 821788 + ... + 822385.

It is an arithmetic number, because the mean of its divisors is an integer number (69055308).

Almost surely, 2^491607727 is an apocalyptic number.

491607727 is a deficient number, since it is larger than the sum of its proper divisors (60834737).

491607727 is a wasteful number, since it uses less digits than its factorization.

491607727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644209.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 491607727 is about 22172.2287332600. The cubic root of 491607727 is about 789.2348126825.

The spelling of 491607727 in words is "four hundred ninety-one million, six hundred seven thousand, seven hundred twenty-seven".