666606054 has 32 divisors (see below), whose sum is σ = 1341900000. Its totient is φ = 220760064.

The previous prime is 666606047. The next prime is 666606067. The reversal of 666606054 is 450606666.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 939852 + ... + 940560.

It is an arithmetic number, because the mean of its divisors is an integer number (41934375).

Almost surely, 2^666606054 is an apocalyptic number.

666606054 is an abundant number, since it is smaller than the sum of its proper divisors (675293946).

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

666606054 is a wasteful number, since it uses less digits than its factorization.

666606054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 666606054 is about 25818.7151887928. The cubic root of 666606054 is about 873.5539889131.

The spelling of 666606054 in words is "six hundred sixty-six million, six hundred six thousand, fifty-four".