2102698647 has 12 divisors (see below), whose sum is σ = 3471121680. Its totient is φ = 1201542048.

The previous prime is 2102698639. The next prime is 2102698649. The reversal of 2102698647 is 7468962012.

It is a happy number.

It is not a de Polignac number, because 2102698647 - 2³ = 2102698639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102698649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16688022 + ... + 16688147.

It is an arithmetic number, because the mean of its divisors is an integer number (289260140).

Almost surely, 2^2102698647 is an apocalyptic number.

2102698647 is a deficient number, since it is larger than the sum of its proper divisors (1368423033).

2102698647 is a wasteful number, since it uses less digits than its factorization.

2102698647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33376182 (or 33376179 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 2102698647 is about 45855.1921487633. The cubic root of 2102698647 is about 1281.1274748049.

The spelling of 2102698647 in words is "two billion, one hundred two million, six hundred ninety-eight thousand, six hundred forty-seven".