491862767 has 16 divisors (see below), whose sum is σ = 551536128. Its totient is φ = 434777280.

The previous prime is 491862757. The next prime is 491862779. The reversal of 491862767 is 767268194.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491862767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491862757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107978 + ... + 112440.

It is an arithmetic number, because the mean of its divisors is an integer number (34471008).

Almost surely, 2^491862767 is an apocalyptic number.

491862767 is a deficient number, since it is larger than the sum of its proper divisors (59673361).

491862767 is a wasteful number, since it uses less digits than its factorization.

491862767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750.

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

The square root of 491862767 is about 22177.9793263498. The cubic root of 491862767 is about 789.3712708362.

The spelling of 491862767 in words is "four hundred ninety-one million, eight hundred sixty-two thousand, seven hundred sixty-seven".