133502664 has 64 divisors (see below), whose sum is σ = 354052800. Its totient is φ = 41831424.

The previous prime is 133502609. The next prime is 133502669. The reversal of 133502664 is 466205331.

It is a super-2 number, since 2×133502664² = 35645922590193792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133502669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61404 + ... + 63540.

It is an arithmetic number, because the mean of its divisors is an integer number (5532075).

Almost surely, 2^133502664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133502664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177026400).

133502664 is an abundant number, since it is smaller than the sum of its proper divisors (220550136).

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

133502664 is a wasteful number, since it uses less digits than its factorization.

133502664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302 (or 2298 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 133502664 is about 11554.3352902709. The cubic root of 133502664 is about 511.0891295874.

Adding to 133502664 its reverse (466205331), we get a palindrome (599707995).

The spelling of 133502664 in words is "one hundred thirty-three million, five hundred two thousand, six hundred sixty-four".