666786030 has 16 divisors (see below), whose sum is σ = 1600286544. Its totient is φ = 177809600.

The previous prime is 666786023. The next prime is 666786041. The reversal of 666786030 is 30687666.

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, 11113071 + ... + 11113130.

It is an arithmetic number, because the mean of its divisors is an integer number (100017909).

Almost surely, 2^666786030 is an apocalyptic number.

666786030 is an abundant number, since it is smaller than the sum of its proper divisors (933500514).

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

666786030 is a wasteful number, since it uses less digits than its factorization.

666786030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22226211.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 666786030 is about 25822.2003322722. The cubic root of 666786030 is about 873.6325983631.

The spelling of 666786030 in words is "six hundred sixty-six million, seven hundred eighty-six thousand, thirty".