666066246 has 32 divisors (see below), whose sum is σ = 1391385600. Its totient is φ = 212165184.

The previous prime is 666066241. The next prime is 666066251. The reversal of 666066246 is 642660666.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (666066241) and next prime (666066251).

It is a junction number, because it is equal to n+sod(n) for n = 666066198 and 666066207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666066241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216930 + ... + 219978.

It is an arithmetic number, because the mean of its divisors is an integer number (43480800).

Almost surely, 2^666066246 is an apocalyptic number.

666066246 is an abundant number, since it is smaller than the sum of its proper divisors (725319354).

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

666066246 is a wasteful number, since it uses less digits than its factorization.

666066246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4660.

The product of its (nonzero) digits is 373248, while the sum is 42.

The square root of 666066246 is about 25808.2592593921. The cubic root of 666066246 is about 873.3181280818.

The spelling of 666066246 in words is "six hundred sixty-six million, sixty-six thousand, two hundred forty-six".