20086699 has 2 divisors, whose sum is σ = 20086700. Its totient is φ = 20086698.

The previous prime is 20086657. The next prime is 20086709. The reversal of 20086699 is 99668002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20086699 - 2¹³ = 20078507 is a prime.

It is not a weakly prime, because it can be changed into another prime (20036699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10043349 + 10043350.

It is an arithmetic number, because the mean of its divisors is an integer number (10043350).

Almost surely, 2^20086699 is an apocalyptic number.

20086699 is a deficient number, since it is larger than the sum of its proper divisors (1).

20086699 is an equidigital number, since it uses as much as digits as its factorization.

20086699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 20086699 is about 4481.8187156555. The cubic root of 20086699 is about 271.8334250780.

The spelling of 20086699 in words is "twenty million, eighty-six thousand, six hundred ninety-nine".