2066187770 has 8 divisors (see below), whose sum is σ = 3719138004. Its totient is φ = 826475104.

The previous prime is 2066187763. The next prime is 2066187779. The reversal of 2066187770 is 777816602.

It can be written as a sum of positive squares in 2 ways, for example, as 1671092641 + 395095129 = 40879^2 + 19877^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2066187779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103309379 + ... + 103309398.

Almost surely, 2^2066187770 is an apocalyptic number.

2066187770 is a deficient number, since it is larger than the sum of its proper divisors (1652950234).

2066187770 is a wasteful number, since it uses less digits than its factorization.

2066187770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206618784.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 2066187770 is about 45455.3381903600. The cubic root of 2066187770 is about 1273.6690496768.

The spelling of 2066187770 in words is "two billion, sixty-six million, one hundred eighty-seven thousand, seven hundred seventy".