10666554 has 16 divisors (see below), whose sum is σ = 21386592. Its totient is φ = 3546608.

The previous prime is 10666547. The next prime is 10666559. The reversal of 10666554 is 45566601.

It is a super-2 number, since 2×10666554² = 227550748469832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10666559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652 + ... + 4664.

It is an arithmetic number, because the mean of its divisors is an integer number (1336662).

Almost surely, 2^10666554 is an apocalyptic number.

10666554 is an abundant number, since it is smaller than the sum of its proper divisors (10720038).

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

10666554 is a wasteful number, since it uses less digits than its factorization.

10666554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 10666554 is about 3265.9690751751. The cubic root of 10666554 is about 220.1277082212.

The spelling of 10666554 in words is "ten million, six hundred sixty-six thousand, five hundred fifty-four".