133311664 has 40 divisors (see below), whose sum is σ = 267295392. Its totient is φ = 64366080.

The previous prime is 133311601. The next prime is 133311667. The reversal of 133311664 is 466113331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133311667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66582 + ... + 68554.

Almost surely, 2^133311664 is an apocalyptic number.

It is an amenable number.

133311664 is an abundant number, since it is smaller than the sum of its proper divisors (133983728).

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

133311664 is a wasteful number, since it uses less digits than its factorization.

133311664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125 (or 2119 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 133311664 is about 11546.0670360084. The cubic root of 133311664 is about 510.8452777387.

Adding to 133311664 its reverse (466113331), we get a palindrome (599424995).

The spelling of 133311664 in words is "one hundred thirty-three million, three hundred eleven thousand, six hundred sixty-four".