10666540 has 12 divisors (see below), whose sum is σ = 22399776. Its totient is φ = 4266608.

The previous prime is 10666529. The next prime is 10666547. The reversal of 10666540 is 4566601.

It is a super-2 number, since 2×10666540² = 227550151143200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10666499 and 10666508.

It is not an unprimeable number, because it can be changed into a prime (10666547) 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, 266644 + ... + 266683.

It is an arithmetic number, because the mean of its divisors is an integer number (1866648).

Almost surely, 2^10666540 is an apocalyptic number.

10666540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10666540 is an abundant number, since it is smaller than the sum of its proper divisors (11733236).

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

10666540 is a wasteful number, since it uses less digits than its factorization.

10666540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533336 (or 533334 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 10666540 is about 3265.9669318595. The cubic root of 10666540 is about 220.1276119143.

The spelling of 10666540 in words is "ten million, six hundred sixty-six thousand, five hundred forty".