10661812 has 48 divisors (see below), whose sum is σ = 22960000. Its totient is φ = 4318272.

The previous prime is 10661789. The next prime is 10661813. The reversal of 10661812 is 21816601.

It is a super-2 number, since 2×10661812² = 227348470246688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661813) 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 15 ways as a sum of consecutive naturals, for example, 25864 + ... + 26272.

Almost surely, 2^10661812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10661812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11480000).

10661812 is an abundant number, since it is smaller than the sum of its proper divisors (12298188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10661812 is a wasteful number, since it uses less digits than its factorization.

10661812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 10661812 is about 3265.2430231148. The cubic root of 10661812 is about 220.0950828667.

The spelling of 10661812 in words is "ten million, six hundred sixty-one thousand, eight hundred twelve".