6661137 has 8 divisors (see below), whose sum is σ = 10150336. Its totient is φ = 3806352.

The previous prime is 6661117. The next prime is 6661141. The reversal of 6661137 is 7311666.

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

It is not a de Polignac number, because 6661137 - 2¹⁰ = 6660113 is a prime.

It is a super-2 number, since 2×6661137² = 88741492265538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6661117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158578 + ... + 158619.

It is an arithmetic number, because the mean of its divisors is an integer number (1268792).

Almost surely, 2^6661137 is an apocalyptic number.

It is an amenable number.

6661137 is a deficient number, since it is larger than the sum of its proper divisors (3489199).

6661137 is a wasteful number, since it uses less digits than its factorization.

6661137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317207.

The product of its digits is 4536, while the sum is 30.

The square root of 6661137 is about 2580.9178599870. The cubic root of 6661137 is about 188.1551552268.

The spelling of 6661137 in words is "six million, six hundred sixty-one thousand, one hundred thirty-seven".