2136861 has 40 divisors (see below), whose sum is σ = 3531264. Its totient is φ = 1283040.

The previous prime is 2136853. The next prime is 2136863. The reversal of 2136861 is 1686312.

It is not a de Polignac number, because 2136861 - 2³ = 2136853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136863) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 57735 + ... + 57771.

2^2136861 is an apocalyptic number.

It is an amenable number.

2136861 is a deficient number, since it is larger than the sum of its proper divisors (1394403).

2136861 is a wasteful number, since it uses less digits than its factorization.

2136861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 94 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2136861 is about 1461.8006019974. The cubic root of 2136861 is about 128.8028356371.

The spelling of 2136861 in words is "two million, one hundred thirty-six thousand, eight hundred sixty-one".