246681666 has 128 divisors (see below), whose sum is σ = 700600320. Its totient is φ = 62467200.

The previous prime is 246681653. The next prime is 246681667. The reversal of 246681666 is 666186642.

246681666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (246681667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 169755 + ... + 171201.

It is an arithmetic number, because the mean of its divisors is an integer number (5473440).

Almost surely, 2^246681666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 246681666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350300160).

246681666 is an abundant number, since it is smaller than the sum of its proper divisors (453918654).

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

246681666 is a wasteful number, since it uses less digits than its factorization.

246681666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517 (or 1511 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 246681666 is about 15706.1028266085. The cubic root of 246681666 is about 627.1608753648.

The spelling of 246681666 in words is "two hundred forty-six million, six hundred eighty-one thousand, six hundred sixty-six".