2137986 has 24 divisors (see below), whose sum is σ = 4746924. Its totient is φ = 695040.

The previous prime is 2137981. The next prime is 2137987. The reversal of 2137986 is 6897312.

It can be written as a sum of positive squares in 2 ways, for example, as 1640961 + 497025 = 1281^2 + 705^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2137986.

It is not an unprimeable number, because it can be changed into a prime (2137981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 711 + ... + 2186.

2^2137986 is an apocalyptic number.

2137986 is an abundant number, since it is smaller than the sum of its proper divisors (2608938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2137986 is a wasteful number, since it uses less digits than its factorization.

2137986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946 (or 2943 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2137986 is about 1462.1853507678. The cubic root of 2137986 is about 128.8254354175.

The spelling of 2137986 in words is "two million, one hundred thirty-seven thousand, nine hundred eighty-six".