76850861 has 2 divisors, whose sum is σ = 76850862. Its totient is φ = 76850860.

The previous prime is 76850849. The next prime is 76850881. The reversal of 76850861 is 16805867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68475625 + 8375236 = 8275^2 + 2894^2 .

It is a cyclic number.

It is not a de Polignac number, because 76850861 - 2¹⁸ = 76588717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76850821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38425430 + 38425431.

It is an arithmetic number, because the mean of its divisors is an integer number (38425431).

Almost surely, 2^76850861 is an apocalyptic number.

It is an amenable number.

76850861 is a deficient number, since it is larger than the sum of its proper divisors (1).

76850861 is an equidigital number, since it uses as much as digits as its factorization.

76850861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 76850861 is about 8766.4622853235. The cubic root of 76850861 is about 425.1572400876.

The spelling of 76850861 in words is "seventy-six million, eight hundred fifty thousand, eight hundred sixty-one".