11285661 has 8 divisors (see below), whose sum is σ = 15331680. Its totient is φ = 7381712.

The previous prime is 11285657. The next prime is 11285683. The reversal of 11285661 is 16658211.

11285661 is digitally balanced in base 2 and base 4, because in such bases 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 a cyclic number.

It is not a de Polignac number, because 11285661 - 2² = 11285657 is a prime.

It is a super-3 number, since 3×11285661³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11285761) 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, 35331 + ... + 35648.

It is an arithmetic number, because the mean of its divisors is an integer number (1916460).

Almost surely, 2^11285661 is an apocalyptic number.

It is an amenable number.

11285661 is a deficient number, since it is larger than the sum of its proper divisors (4046019).

11285661 is an equidigital number, since it uses as much as digits as its factorization.

11285661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71035.

The product of its digits is 2880, while the sum is 30.

The square root of 11285661 is about 3359.4137881482. The cubic root of 11285661 is about 224.3067451962.

The spelling of 11285661 in words is "eleven million, two hundred eighty-five thousand, six hundred sixty-one".