10668978 has 24 divisors (see below), whose sum is σ = 23189868. Its totient is φ = 3544992.

The previous prime is 10668971. The next prime is 10669003. The reversal of 10668978 is 87986601.

It is a happy number.

10668978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9753129 + 915849 = 3123^2 + 957^2 .

It is a super-2 number, since 2×10668978² = 227654183128968, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10668971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6400 + ... + 7892.

Almost surely, 2^10668978 is an apocalyptic number.

10668978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10668978 is an abundant number, since it is smaller than the sum of its proper divisors (12520890).

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

10668978 is a wasteful number, since it uses less digits than its factorization.

10668978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1895 counting only the distinct ones).

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

The square root of 10668978 is about 3266.3401537501. The cubic root of 10668978 is about 220.1443818083.

The spelling of 10668978 in words is "ten million, six hundred sixty-eight thousand, nine hundred seventy-eight".