10661647 has 8 divisors (see below), whose sum is σ = 11067840. Its totient is φ = 10258080.

The previous prime is 10661611. The next prime is 10661653. The reversal of 10661647 is 74616601.

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 10661647 - 2¹¹ = 10659599 is a prime.

It is a super-2 number, since 2×10661647² = 227341433505218, 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 (10661687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12073 + ... + 12925.

It is an arithmetic number, because the mean of its divisors is an integer number (1383480).

Almost surely, 2^10661647 is an apocalyptic number.

10661647 is a deficient number, since it is larger than the sum of its proper divisors (406193).

10661647 is an equidigital number, since it uses as much as digits as its factorization.

10661647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 10661647 is about 3265.2177569038. The cubic root of 10661647 is about 220.0939474788.

The spelling of 10661647 in words is "ten million, six hundred sixty-one thousand, six hundred forty-seven".