76833821 has 2 divisors, whose sum is σ = 76833822. Its totient is φ = 76833820.

The previous prime is 76833769. The next prime is 76833833. The reversal of 76833821 is 12833867.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66504025 + 10329796 = 8155^2 + 3214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76833821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76833521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38416910 + 38416911.

It is an arithmetic number, because the mean of its divisors is an integer number (38416911).

Almost surely, 2^76833821 is an apocalyptic number.

It is an amenable number.

76833821 is a deficient number, since it is larger than the sum of its proper divisors (1).

76833821 is an equidigital number, since it uses as much as digits as its factorization.

76833821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 76833821 is about 8765.4903456681. The cubic root of 76833821 is about 425.1258146540.

The spelling of 76833821 in words is "seventy-six million, eight hundred thirty-three thousand, eight hundred twenty-one".