787091 has 2 divisors, whose sum is σ = 787092. Its totient is φ = 787090.

The previous prime is 787079. The next prime is 787099. The reversal of 787091 is 190787.

It is a strong prime.

It is an emirp because it is prime and its reverse (190787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 787091 - 2¹⁸ = 524947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (787099) 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, 393545 + 393546.

It is an arithmetic number, because the mean of its divisors is an integer number (393546).

2⁷⁸⁷⁰⁹¹ is an apocalyptic number.

787091 is a deficient number, since it is larger than the sum of its proper divisors (1).

787091 is an equidigital number, since it uses as much as digits as its factorization.

787091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 787091 is about 887.1814921424. The cubic root of 787091 is about 92.3297477035.

The spelling of 787091 in words is "seven hundred eighty-seven thousand, ninety-one".