10689778 has 8 divisors (see below), whose sum is σ = 17492400. Its totient is φ = 4858980.

The previous prime is 10689773. The next prime is 10689793. The reversal of 10689778 is 87798601.

10689778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×10689778² = 228542707378568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10689773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242928 + ... + 242971.

It is an arithmetic number, because the mean of its divisors is an integer number (2186550).

Almost surely, 2^10689778 is an apocalyptic number.

10689778 is a deficient number, since it is larger than the sum of its proper divisors (6802622).

10689778 is a wasteful number, since it uses less digits than its factorization.

10689778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485912.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 10689778 is about 3269.5225951200. The cubic root of 10689778 is about 220.2873517864.

The spelling of 10689778 in words is "ten million, six hundred eighty-nine thousand, seven hundred seventy-eight".