2069866 has 8 divisors (see below), whose sum is σ = 3112164. Its totient is φ = 1032480.

The previous prime is 2069861. The next prime is 2069887. The reversal of 2069866 is 6689602.

It can be written as a sum of positive squares in 2 ways, for example, as 2019241 + 50625 = 1421^2 + 225^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2069861) 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 3 ways as a sum of consecutive naturals, for example, 126 + ... + 2038.

2^2069866 is an apocalyptic number.

2069866 is a deficient number, since it is larger than the sum of its proper divisors (1042298).

2069866 is a wasteful number, since it uses less digits than its factorization.

2069866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 2069866 is about 1438.7028880210. The cubic root of 2069866 is about 127.4424397365.

The spelling of 2069866 in words is "two million, sixty-nine thousand, eight hundred sixty-six".