10661587 has 8 divisors (see below), whose sum is σ = 11056176. Its totient is φ = 10272672.

The previous prime is 10661569. The next prime is 10661591. The reversal of 10661587 is 78516601.

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-10661587 is a prime.

It is a super-2 number, since 2×10661587² = 227338874717138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10661507) 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, 2613 + ... + 5305.

It is an arithmetic number, because the mean of its divisors is an integer number (1382022).

Almost surely, 2^10661587 is an apocalyptic number.

10661587 is a deficient number, since it is larger than the sum of its proper divisors (394589).

10661587 is a wasteful number, since it uses less digits than its factorization.

10661587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 10661587 is about 3265.2085691423. The cubic root of 10661587 is about 220.0935346076.

The spelling of 10661587 in words is "ten million, six hundred sixty-one thousand, five hundred eighty-seven".