133768647 has 6 divisors (see below), whose sum is σ = 193221392. Its totient is φ = 89179092.

The previous prime is 133768643. The next prime is 133768651. The reversal of 133768647 is 746867331.

It is an interprime number because it is at equal distance from previous prime (133768643) and next prime (133768651).

It is not a de Polignac number, because 133768647 - 2² = 133768643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133768643) 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 5 ways as a sum of consecutive naturals, for example, 7431583 + ... + 7431600.

Almost surely, 2^133768647 is an apocalyptic number.

133768647 is a deficient number, since it is larger than the sum of its proper divisors (59452745).

133768647 is a wasteful number, since it uses less digits than its factorization.

133768647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14863189 (or 14863186 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 133768647 is about 11565.8396582349. The cubic root of 133768647 is about 511.4283259134.

The spelling of 133768647 in words is "one hundred thirty-three million, seven hundred sixty-eight thousand, six hundred forty-seven".