8506813699 has 2 divisors, whose sum is σ = 8506813700. Its totient is φ = 8506813698.

The previous prime is 8506813691. The next prime is 8506813709. The reversal of 8506813699 is 9963186058.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8506813699 - 2³ = 8506813691 is a prime.

It is not a weakly prime, because it can be changed into another prime (8506813691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4253406849 + 4253406850.

It is an arithmetic number, because the mean of its divisors is an integer number (4253406850).

Almost surely, 2^8506813699 is an apocalyptic number.

8506813699 is a deficient number, since it is larger than the sum of its proper divisors (1).

8506813699 is an equidigital number, since it uses as much as digits as its factorization.

8506813699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The square root of 8506813699 is about 92232.3896416004. The cubic root of 8506813699 is about 2041.3727223575.

The spelling of 8506813699 in words is "eight billion, five hundred six million, eight hundred thirteen thousand, six hundred ninety-nine".