2257998686 has 8 divisors (see below), whose sum is σ = 3387251304. Its totient is φ = 1128914920.

The previous prime is 2257998679. The next prime is 2257998707. The reversal of 2257998686 is 6868997522.

2257998686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560 + ... + 67203.

It is an arithmetic number, because the mean of its divisors is an integer number (423406413).

Almost surely, 2^2257998686 is an apocalyptic number.

2257998686 is a deficient number, since it is larger than the sum of its proper divisors (1129252618).

2257998686 is a wasteful number, since it uses less digits than its factorization.

2257998686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84426.

The product of its digits is 26127360, while the sum is 62.

The square root of 2257998686 is about 47518.4036558469. The cubic root of 2257998686 is about 1311.9216375558.

The spelling of 2257998686 in words is "two billion, two hundred fifty-seven million, nine hundred ninety-eight thousand, six hundred eighty-six".