2086398697 has 4 divisors (see below), whose sum is σ = 2086626960. Its totient is φ = 2086170436.

The previous prime is 2086398679. The next prime is 2086398751. The reversal of 2086398697 is 7968936802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2086398697 - 2¹⁹ = 2085874409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2086398637) 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, 99823 + ... + 118900.

It is an arithmetic number, because the mean of its divisors is an integer number (521656740).

Almost surely, 2^2086398697 is an apocalyptic number.

It is an amenable number.

2086398697 is a deficient number, since it is larger than the sum of its proper divisors (228263).

2086398697 is an equidigital number, since it uses as much as digits as its factorization.

2086398697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228262.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The square root of 2086398697 is about 45677.1134924264. The cubic root of 2086398697 is about 1277.8084849060.

The spelling of 2086398697 in words is "two billion, eighty-six million, three hundred ninety-eight thousand, six hundred ninety-seven".