2106664072 has 32 divisors (see below), whose sum is σ = 4185475200. Its totient is φ = 990630144.

The previous prime is 2106664057. The next prime is 2106664073. The reversal of 2106664072 is 2704666012.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (2106664073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204829 + ... + 214867.

It is an arithmetic number, because the mean of its divisors is an integer number (130796100).

Almost surely, 2^2106664072 is an apocalyptic number.

It is an amenable number.

2106664072 is a deficient number, since it is larger than the sum of its proper divisors (2078811128).

2106664072 is a wasteful number, since it uses less digits than its factorization.

2106664072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11605 (or 11601 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 2106664072 is about 45898.4103428430. The cubic root of 2106664072 is about 1281.9323174638.

The spelling of 2106664072 in words is "two billion, one hundred six million, six hundred sixty-four thousand, seventy-two".