10561978 has 8 divisors (see below), whose sum is σ = 18106272. Its totient is φ = 4526556.

The previous prime is 10561963. The next prime is 10561987. The reversal of 10561978 is 87916501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×10561978² = 223110758544968, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 377200 + ... + 377227.

It is an arithmetic number, because the mean of its divisors is an integer number (2263284).

Almost surely, 2^10561978 is an apocalyptic number.

10561978 is a deficient number, since it is larger than the sum of its proper divisors (7544294).

10561978 is an equidigital number, since it uses as much as digits as its factorization.

10561978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754436.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 10561978 is about 3249.9196913155. The cubic root of 10561978 is about 219.4059594080.

The spelling of 10561978 in words is "ten million, five hundred sixty-one thousand, nine hundred seventy-eight".