6652661 has 8 divisors (see below), whose sum is σ = 7124760. Its totient is φ = 6189568.

The previous prime is 6652651. The next prime is 6652673. The reversal of 6652661 is 1662566.

It can be written as a sum of positive squares in 4 ways, for example, as 844561 + 5808100 = 919^2 + 2410^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6652661 is a prime.

It is an Ulam number.

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 (6652621) 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, 686 + ... + 3711.

It is an arithmetic number, because the mean of its divisors is an integer number (890595).

Almost surely, 2^6652661 is an apocalyptic number.

It is an amenable number.

6652661 is a deficient number, since it is larger than the sum of its proper divisors (472099).

6652661 is a wasteful number, since it uses less digits than its factorization.

6652661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503.

The product of its digits is 12960, while the sum is 32.

The square root of 6652661 is about 2579.2752858119. The cubic root of 6652661 is about 188.0753150027.

The spelling of 6652661 in words is "six million, six hundred fifty-two thousand, six hundred sixty-one".