137866885 has 8 divisors (see below), whose sum is σ = 178166520. Its totient is φ = 101809344.

The previous prime is 137866873. The next prime is 137866891. The reversal of 137866885 is 588668731.

137866885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12404484 + 125462401 = 3522^2 + 11201^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-137866885 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060450 + ... + 1060579.

It is an arithmetic number, because the mean of its divisors is an integer number (22270815).

Almost surely, 2^137866885 is an apocalyptic number.

It is an amenable number.

137866885 is a deficient number, since it is larger than the sum of its proper divisors (40299635).

137866885 is a wasteful number, since it uses less digits than its factorization.

137866885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121047.

The product of its digits is 1935360, while the sum is 52.

The square root of 137866885 is about 11741.6730068589. The cubic root of 137866885 is about 516.5987143839.

The spelling of 137866885 in words is "one hundred thirty-seven million, eight hundred sixty-six thousand, eight hundred eighty-five".