2106630688 has 24 divisors (see below), whose sum is σ = 4171413708. Its totient is φ = 1047224064.

The previous prime is 2106630653. The next prime is 2106630703. The reversal of 2106630688 is 8860366012.

2106630688 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 2 ways, for example, as 2029682704 + 76947984 = 45052^2 + 8772^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2106630688.

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, 184731 + ... + 195802.

Almost surely, 2^2106630688 is an apocalyptic number.

It is an amenable number.

2106630688 is a deficient number, since it is larger than the sum of its proper divisors (2064783020).

2106630688 is a wasteful number, since it uses less digits than its factorization.

2106630688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380716 (or 380708 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 2106630688 is about 45898.0466686764. The cubic root of 2106630688 is about 1281.9255458962.

The spelling of 2106630688 in words is "two billion, one hundred six million, six hundred thirty thousand, six hundred eighty-eight".