10689281 has 4 divisors (see below), whose sum is σ = 10712832. Its totient is φ = 10665732.

The previous prime is 10689271. The next prime is 10689293. The reversal of 10689281 is 18298601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10689281 is a prime.

It is a super-2 number, since 2×10689281² = 228521456593922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10689221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11081 + ... + 12006.

It is an arithmetic number, because the mean of its divisors is an integer number (2678208).

Almost surely, 2^10689281 is an apocalyptic number.

It is an amenable number.

10689281 is a deficient number, since it is larger than the sum of its proper divisors (23551).

10689281 is an equidigital number, since it uses as much as digits as its factorization.

10689281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23550.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 10689281 is about 3269.4465892564. The cubic root of 10689281 is about 220.2839377925.

The spelling of 10689281 in words is "ten million, six hundred eighty-nine thousand, two hundred eighty-one".