10611978 has 64 divisors (see below), whose sum is σ = 24820992. Its totient is φ = 2995200.

The previous prime is 10611977. The next prime is 10612001. The reversal of 10611978 is 87911601.

It is a super-2 number, since 2×10611978² = 225228154144968, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10611973) 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 31 ways as a sum of consecutive naturals, for example, 70203 + ... + 70353.

It is an arithmetic number, because the mean of its divisors is an integer number (387828).

Almost surely, 2^10611978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10611978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12410496).

10611978 is an abundant number, since it is smaller than the sum of its proper divisors (14209014).

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

10611978 is a wasteful number, since it uses less digits than its factorization.

10611978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 10611978 is about 3257.6031065801. The cubic root of 10611978 is about 219.7516343174.

The spelling of 10611978 in words is "ten million, six hundred eleven thousand, nine hundred seventy-eight".