10661289 has 8 divisors (see below), whose sum is σ = 14415552. Its totient is φ = 7007280.

The previous prime is 10661281. The next prime is 10661293. The reversal of 10661289 is 98216601.

10661289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10661289 - 2³ = 10661281 is a prime.

It is a super-2 number, since 2×10661289² = 227326166283042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10661281) 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, 24814 + ... + 25239.

It is an arithmetic number, because the mean of its divisors is an integer number (1801944).

Almost surely, 2^10661289 is an apocalyptic number.

It is an amenable number.

10661289 is a deficient number, since it is larger than the sum of its proper divisors (3754263).

10661289 is an equidigital number, since it uses as much as digits as its factorization.

10661289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50127.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 10661289 is about 3265.1629362101. The cubic root of 10661289 is about 220.0914839909.

The spelling of 10661289 in words is "ten million, six hundred sixty-one thousand, two hundred eighty-nine".