10666840 has 16 divisors (see below), whose sum is σ = 24000480. Its totient is φ = 4266720.

The previous prime is 10666829. The next prime is 10666853. The reversal of 10666840 is 4866601.

It is a super-2 number, since 2×10666840² = 227562951171200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133296 + ... + 133375.

It is an arithmetic number, because the mean of its divisors is an integer number (1500030).

Almost surely, 2^10666840 is an apocalyptic number.

10666840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10666840 is an abundant number, since it is smaller than the sum of its proper divisors (13333640).

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

10666840 is a wasteful number, since it uses less digits than its factorization.

10666840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266682 (or 266678 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 10666840 is about 3266.0128597420. The cubic root of 10666840 is about 220.1296756158.

The spelling of 10666840 in words is "ten million, six hundred sixty-six thousand, eight hundred forty".