6136661 has 8 divisors (see below), whose sum is σ = 6454200. Its totient is φ = 5826240.

The previous prime is 6136651. The next prime is 6136673. The reversal of 6136661 is 1666316.

It can be written as a sum of positive squares in 4 ways, for example, as 256036 + 5880625 = 506^2 + 2425^2 .

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 6136661 - 2¹⁰ = 6135637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6136621) 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, 35 + ... + 3503.

It is an arithmetic number, because the mean of its divisors is an integer number (806775).

Almost surely, 2^6136661 is an apocalyptic number.

6136661 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6136661 is a deficient number, since it is larger than the sum of its proper divisors (317539).

6136661 is a wasteful number, since it uses less digits than its factorization.

6136661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559.

The product of its digits is 3888, while the sum is 29.

The square root of 6136661 is about 2477.2284916818. The cubic root of 6136661 is about 183.0813239035.

The spelling of 6136661 in words is "six million, one hundred thirty-six thousand, six hundred sixty-one".