10921678 has 4 divisors (see below), whose sum is σ = 16382520. Its totient is φ = 5460838.

The previous prime is 10921649. The next prime is 10921693. The reversal of 10921678 is 87612901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2730418 + ... + 2730421.

It is an arithmetic number, because the mean of its divisors is an integer number (4095630).

Almost surely, 2^10921678 is an apocalyptic number.

10921678 is a deficient number, since it is larger than the sum of its proper divisors (5460842).

10921678 is an equidigital number, since it uses as much as digits as its factorization.

10921678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460841.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 10921678 is about 3304.7962115689. The cubic root of 10921678 is about 221.8689132232.

The spelling of 10921678 in words is "ten million, nine hundred twenty-one thousand, six hundred seventy-eight".