10978866 has 36 divisors (see below), whose sum is σ = 24888318. Its totient is φ = 3497472.

The previous prime is 10978861. The next prime is 10978883. The reversal of 10978866 is 66887901.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8003241 + 2975625 = 2829^2 + 1725^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10978861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8946 + ... + 10098.

Almost surely, 2^10978866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10978866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12444159).

10978866 is an abundant number, since it is smaller than the sum of its proper divisors (13909452).

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

10978866 is a wasteful number, since it uses less digits than its factorization.

10978866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 10978866 is about 3313.4371881779. The cubic root of 10978866 is about 222.2554886679.

The spelling of 10978866 in words is "ten million, nine hundred seventy-eight thousand, eight hundred sixty-six".