786491 has 2 divisors, whose sum is σ = 786492. Its totient is φ = 786490.

The previous prime is 786469. The next prime is 786547. The reversal of 786491 is 194687.

It is a weak prime.

It is an emirp because it is prime and its reverse (194687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 786491 - 2¹⁸ = 524347 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (786431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393245 + 393246.

It is an arithmetic number, because the mean of its divisors is an integer number (393246).

2⁷⁸⁶⁴⁹¹ is an apocalyptic number.

786491 is a deficient number, since it is larger than the sum of its proper divisors (1).

786491 is an equidigital number, since it uses as much as digits as its factorization.

786491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 786491 is about 886.8432781501. The cubic root of 786491 is about 92.3062807298.

The spelling of 786491 in words is "seven hundred eighty-six thousand, four hundred ninety-one".