133346646 has 12 divisors (see below), whose sum is σ = 288917772. Its totient is φ = 44448876.

The previous prime is 133346639. The next prime is 133346677. The reversal of 133346646 is 646643331.

133346646 is a `hidden beast` number, since 1 + 3 + 3 + 3 + 4 + 6 + 646 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 133346646.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3704056 + ... + 3704091.

It is an arithmetic number, because the mean of its divisors is an integer number (24076481).

Almost surely, 2^133346646 is an apocalyptic number.

133346646 is an abundant number, since it is smaller than the sum of its proper divisors (155571126).

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

133346646 is a wasteful number, since it uses less digits than its factorization.

133346646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408155 (or 7408152 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

The square root of 133346646 is about 11547.5818247805. The cubic root of 133346646 is about 510.8899570666.

Adding to 133346646 its reverse (646643331), we get a palindrome (779989977).

The spelling of 133346646 in words is "one hundred thirty-three million, three hundred forty-six thousand, six hundred forty-six".