83680489 has 2 divisors, whose sum is σ = 83680490. Its totient is φ = 83680488.

The previous prime is 83680483. The next prime is 83680543. The reversal of 83680489 is 98408638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82810000 + 870489 = 9100^2 + 933^2 .

It is a cyclic number.

It is not a de Polignac number, because 83680489 - 2¹⁵ = 83647721 is a prime.

It is not a weakly prime, because it can be changed into another prime (83680483) 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, 41840244 + 41840245.

It is an arithmetic number, because the mean of its divisors is an integer number (41840245).

Almost surely, 2^83680489 is an apocalyptic number.

It is an amenable number.

83680489 is a deficient number, since it is larger than the sum of its proper divisors (1).

83680489 is an equidigital number, since it uses as much as digits as its factorization.

83680489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 83680489 is about 9147.7040288807. The cubic root of 83680489 is about 437.3959288785.

The spelling of 83680489 in words is "eighty-three million, six hundred eighty thousand, four hundred eighty-nine".