10681990 has 48 divisors (see below), whose sum is σ = 22219920. Its totient is φ = 3666240.

The previous prime is 10681987. The next prime is 10681997. The reversal of 10681990 is 9918601.

It is a super-2 number, since 2×10681990² = 228209820720200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10681997) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 39576 + ... + 39844.

It is an arithmetic number, because the mean of its divisors is an integer number (462915).

Almost surely, 2^10681990 is an apocalyptic number.

10681990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10681990 is an abundant number, since it is smaller than the sum of its proper divisors (11537930).

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

10681990 is a wasteful number, since it uses less digits than its factorization.

10681990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 10681990 is about 3268.3313785478. The cubic root of 10681990 is about 220.2338422655.

The spelling of 10681990 in words is "ten million, six hundred eighty-one thousand, nine hundred ninety".