660546066 has 16 divisors (see below), whose sum is σ = 1326118464. Its totient is φ = 219344304.

The previous prime is 660546059. The next prime is 660546071. The reversal of 660546066 is 660645066.

It is a super-2 number, since 2×660546066² = 872642210616152712, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207721 + ... + 210876.

It is an arithmetic number, because the mean of its divisors is an integer number (82882404).

Almost surely, 2^660546066 is an apocalyptic number.

660546066 is an abundant number, since it is smaller than the sum of its proper divisors (665572398).

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

660546066 is a wasteful number, since it uses less digits than its factorization.

660546066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418865.

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

The square root of 660546066 is about 25701.0907550633. The cubic root of 660546066 is about 870.8988226984.

The spelling of 660546066 in words is "six hundred sixty million, five hundred forty-six thousand, sixty-six".