2086398663 has 4 divisors (see below), whose sum is σ = 2781864888. Its totient is φ = 1390932440.

The previous prime is 2086398659. The next prime is 2086398679. The reversal of 2086398663 is 3668936802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2086398663 - 2² = 2086398659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2086398263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347733108 + ... + 347733113.

It is an arithmetic number, because the mean of its divisors is an integer number (695466222).

Almost surely, 2^2086398663 is an apocalyptic number.

2086398663 is a deficient number, since it is larger than the sum of its proper divisors (695466225).

2086398663 is an equidigital number, since it uses as much as digits as its factorization.

2086398663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695466224.

The product of its (nonzero) digits is 2239488, while the sum is 51.

The square root of 2086398663 is about 45677.1131202487. The cubic root of 2086398663 is about 1277.8084779649.

The spelling of 2086398663 in words is "two billion, eighty-six million, three hundred ninety-eight thousand, six hundred sixty-three".