246666641 has 4 divisors (see below), whose sum is σ = 265641012. Its totient is φ = 227692272.

The previous prime is 246666613. The next prime is 246666653. The reversal of 246666641 is 146666642.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124099600 + 122567041 = 11140^2 + 11071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-246666641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (246666601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9487166 + ... + 9487191.

It is an arithmetic number, because the mean of its divisors is an integer number (66410253).

Almost surely, 2^246666641 is an apocalyptic number.

It is an amenable number.

246666641 is a deficient number, since it is larger than the sum of its proper divisors (18974371).

246666641 is a wasteful number, since it uses less digits than its factorization.

246666641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18974370.

The product of its digits is 248832, while the sum is 41.

The square root of 246666641 is about 15705.6245020693. The cubic root of 246666641 is about 627.1481419723.

Subtracting from 246666641 its reverse (146666642), we obtain a palindrome (99999999).

The spelling of 246666641 in words is "two hundred forty-six million, six hundred sixty-six thousand, six hundred forty-one".