83219687 has 2 divisors, whose sum is σ = 83219688. Its totient is φ = 83219686.

The previous prime is 83219659. The next prime is 83219707. The reversal of 83219687 is 78691238.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83219687 - 2¹² = 83215591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83219887) 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, 41609843 + 41609844.

It is an arithmetic number, because the mean of its divisors is an integer number (41609844).

Almost surely, 2^83219687 is an apocalyptic number.

83219687 is a deficient number, since it is larger than the sum of its proper divisors (1).

83219687 is an equidigital number, since it uses as much as digits as its factorization.

83219687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 83219687 is about 9122.4825020386. The cubic root of 83219687 is about 436.5915836046.

The spelling of 83219687 in words is "eighty-three million, two hundred nineteen thousand, six hundred eighty-seven".