2069986 has 4 divisors (see below), whose sum is σ = 3104982. Its totient is φ = 1034992.

The previous prime is 2069983. The next prime is 2069987. The reversal of 2069986 is 6899602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6899602 = 2 ⋅3449801.

It can be written as a sum of positive squares in only one way, i.e., 1640961 + 429025 = 1281^2 + 655^2 .

It is not an unprimeable number, because it can be changed into a prime (2069983) 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 as a sum of consecutive naturals, namely, 517495 + ... + 517498.

2^2069986 is an apocalyptic number.

2069986 is a deficient number, since it is larger than the sum of its proper divisors (1034996).

2069986 is a wasteful number, since it uses less digits than its factorization.

2069986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034995.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 2069986 is about 1438.7445916493. The cubic root of 2069986 is about 127.4449025041. Note that the first 3 decimals are identical.

The spelling of 2069986 in words is "two million, sixty-nine thousand, nine hundred eighty-six".