788621 has 2 divisors, whose sum is σ = 788622. Its totient is φ = 788620.

The previous prime is 788603. The next prime is 788651. The reversal of 788621 is 126887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 662596 + 126025 = 814^2 + 355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-788621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (788651) 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, 394310 + 394311.

It is an arithmetic number, because the mean of its divisors is an integer number (394311).

2⁷⁸⁸⁶²¹ is an apocalyptic number.

It is an amenable number.

788621 is a deficient number, since it is larger than the sum of its proper divisors (1).

788621 is an equidigital number, since it uses as much as digits as its factorization.

788621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 32.

The square root of 788621 is about 888.0433547975. The cubic root of 788621 is about 92.3895345555.

The spelling of 788621 in words is "seven hundred eighty-eight thousand, six hundred twenty-one".