10664778 has 32 divisors (see below), whose sum is σ = 22492800. Its totient is φ = 3364416.

The previous prime is 10664761. The next prime is 10664783. The reversal of 10664778 is 87746601.

10664778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10664778² = 227474979578568, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14688 + ... + 15396.

It is an arithmetic number, because the mean of its divisors is an integer number (702900).

Almost surely, 2^10664778 is an apocalyptic number.

10664778 is an abundant number, since it is smaller than the sum of its proper divisors (11828022).

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

10664778 is a wasteful number, since it uses less digits than its factorization.

10664778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 10664778 is about 3265.6971690590. The cubic root of 10664778 is about 220.1154903262.

The spelling of 10664778 in words is "ten million, six hundred sixty-four thousand, seven hundred seventy-eight".