6661156 has 12 divisors (see below), whose sum is σ = 12033280. Its totient is φ = 3223080.

The previous prime is 6661141. The next prime is 6661157. The reversal of 6661156 is 6511666.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (6661157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26736 + ... + 26983.

Almost surely, 2^6661156 is an apocalyptic number.

It is an amenable number.

6661156 is a deficient number, since it is larger than the sum of its proper divisors (5372124).

6661156 is a wasteful number, since it uses less digits than its factorization.

6661156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53754 (or 53752 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 6661156 is about 2580.9215408454. The cubic root of 6661156 is about 188.1553341224.

The spelling of 6661156 in words is "six million, six hundred sixty-one thousand, one hundred fifty-six".