36681861 has 8 divisors (see below), whose sum is σ = 48955104. Its totient is φ = 24431600.

The previous prime is 36681859. The next prime is 36681871. The reversal of 36681861 is 16818663.

36681861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 36681861 - 2¹ = 36681859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36681851) 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 7 ways as a sum of consecutive naturals, for example, 1590 + ... + 8711.

It is an arithmetic number, because the mean of its divisors is an integer number (6119388).

Almost surely, 2^36681861 is an apocalyptic number.

It is an amenable number.

36681861 is a deficient number, since it is larger than the sum of its proper divisors (12273243).

36681861 is a wasteful number, since it uses less digits than its factorization.

36681861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11491.

The product of its digits is 41472, while the sum is 39.

The square root of 36681861 is about 6056.5552090277. Note that the first 3 decimals coincide. The cubic root of 36681861 is about 332.2643809087.

The spelling of 36681861 in words is "thirty-six million, six hundred eighty-one thousand, eight hundred sixty-one".