66006654 has 16 divisors (see below), whose sum is σ = 150872448. Its totient is φ = 18859032.

The previous prime is 66006649. The next prime is 66006667. The reversal of 66006654 is 45660066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785752 + ... + 785835.

It is an arithmetic number, because the mean of its divisors is an integer number (9429528).

Almost surely, 2^66006654 is an apocalyptic number.

66006654 is an abundant number, since it is smaller than the sum of its proper divisors (84865794).

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

66006654 is a wasteful number, since it uses less digits than its factorization.

66006654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571599.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 66006654 is about 8124.4479197051. The cubic root of 66006654 is about 404.1375826215.

The spelling of 66006654 in words is "sixty-six million, six thousand, six hundred fifty-four".