133015664 has 10 divisors (see below), whose sum is σ = 257717880. Its totient is φ = 66507824.

The previous prime is 133015657. The next prime is 133015679. The reversal of 133015664 is 466510331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4156724 + ... + 4156755.

It is an arithmetic number, because the mean of its divisors is an integer number (25771788).

Almost surely, 2^133015664 is an apocalyptic number.

It is an amenable number.

133015664 is a deficient number, since it is larger than the sum of its proper divisors (124702216).

133015664 is an equidigital number, since it uses as much as digits as its factorization.

133015664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8313487 (or 8313481 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 133015664 is about 11533.2416952043. The cubic root of 133015664 is about 510.4669106110.

Adding to 133015664 its reverse (466510331), we get a palindrome (599525995).

The spelling of 133015664 in words is "one hundred thirty-three million, fifteen thousand, six hundred sixty-four".