6009661 has 8 divisors (see below), whose sum is σ = 6888960. Its totient is φ = 5135568.

The previous prime is 6009631. The next prime is 6009677. The reversal of 6009661 is 1669006.

It is a happy number.

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 6009661 - 2⁷ = 6009533 is a prime.

It is a super-2 number, since 2×6009661² = 72232050669842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6009611) 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, 1620 + ... + 3826.

It is an arithmetic number, because the mean of its divisors is an integer number (861120).

Almost surely, 2^6009661 is an apocalyptic number.

It is an amenable number.

6009661 is a deficient number, since it is larger than the sum of its proper divisors (879299).

6009661 is a wasteful number, since it uses less digits than its factorization.

6009661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 6009661 is about 2451.4609929591. The cubic root of 6009661 is about 181.8095358843.

It can be divided in two parts, 6009 and 661, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 6009661 in words is "six million, nine thousand, six hundred sixty-one".