6661153 has 4 divisors (see below), whose sum is σ = 7011760. Its totient is φ = 6310548.

The previous prime is 6661141. The next prime is 6661157. The reversal of 6661153 is 3511666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6661153 is a prime.

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, 175275 + ... + 175312.

It is an arithmetic number, because the mean of its divisors is an integer number (1752940).

Almost surely, 2^6661153 is an apocalyptic number.

It is an amenable number.

6661153 is a deficient number, since it is larger than the sum of its proper divisors (350607).

6661153 is a wasteful number, since it uses less digits than its factorization.

6661153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350606.

The product of its digits is 3240, while the sum is 28.

The square root of 6661153 is about 2580.9209596576. The cubic root of 6661153 is about 188.1553058758.

The spelling of 6661153 in words is "six million, six hundred sixty-one thousand, one hundred fifty-three".