83766491 has 2 divisors, whose sum is σ = 83766492. Its totient is φ = 83766490.

The previous prime is 83766479. The next prime is 83766499. The reversal of 83766491 is 19466738.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83766491 - 2¹⁸ = 83504347 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83766499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41883245 + 41883246.

It is an arithmetic number, because the mean of its divisors is an integer number (41883246).

Almost surely, 2^83766491 is an apocalyptic number.

83766491 is a deficient number, since it is larger than the sum of its proper divisors (1).

83766491 is an equidigital number, since it uses as much as digits as its factorization.

83766491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 83766491 is about 9152.4035640918. The cubic root of 83766491 is about 437.5457210449.

The spelling of 83766491 in words is "eighty-three million, seven hundred sixty-six thousand, four hundred ninety-one".