133647964 has 12 divisors (see below), whose sum is σ = 234120600. Its totient is φ = 66756368.

The previous prime is 133647949. The next prime is 133647971. The reversal of 133647964 is 469746331.

It is a self number, because there is not a number n which added to its sum of digits gives 133647964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12319 + ... + 20470.

It is an arithmetic number, because the mean of its divisors is an integer number (19510050).

Almost surely, 2^133647964 is an apocalyptic number.

It is an amenable number.

133647964 is a deficient number, since it is larger than the sum of its proper divisors (100472636).

133647964 is a wasteful number, since it uses less digits than its factorization.

133647964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33812 (or 33810 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The square root of 133647964 is about 11560.6212635827. The cubic root of 133647964 is about 511.2744800102.

The spelling of 133647964 in words is "one hundred thirty-three million, six hundred forty-seven thousand, nine hundred sixty-four".