2066890690 has 8 divisors (see below), whose sum is σ = 3720403260. Its totient is φ = 826756272.

The previous prime is 2066890687. The next prime is 2066890711. The reversal of 2066890690 is 960986602.

It is a happy number.

2066890690 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1996213041 + 70677649 = 44679^2 + 8407^2 .

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

It is a super-2 number, since 2×2066890690² = 8544074248817352200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2066890690.

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, 103344525 + ... + 103344544.

Almost surely, 2^2066890690 is an apocalyptic number.

2066890690 is a deficient number, since it is larger than the sum of its proper divisors (1653512570).

2066890690 is a wasteful number, since it uses less digits than its factorization.

2066890690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206689076.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 2066890690 is about 45463.0695180165. The cubic root of 2066890690 is about 1273.8134679713.

The spelling of 2066890690 in words is "two billion, sixty-six million, eight hundred ninety thousand, six hundred ninety".