83500691 has 2 divisors, whose sum is σ = 83500692. Its totient is φ = 83500690.

The previous prime is 83500679. The next prime is 83500727. The reversal of 83500691 is 19600538.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83500691 - 2¹⁴ = 83484307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (83500621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41750345 + 41750346.

It is an arithmetic number, because the mean of its divisors is an integer number (41750346).

Almost surely, 2^83500691 is an apocalyptic number.

83500691 is a deficient number, since it is larger than the sum of its proper divisors (1).

83500691 is an equidigital number, since it uses as much as digits as its factorization.

83500691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 83500691 is about 9137.8712510081. The cubic root of 83500691 is about 437.0824376207.

The spelling of 83500691 in words is "eighty-three million, five hundred thousand, six hundred ninety-one".