133571764 has 12 divisors (see below), whose sum is σ = 243913824. Its totient is φ = 63882104.

The previous prime is 133571749. The next prime is 133571783. The reversal of 133571764 is 467175331.

It is a super-2 number, since 2×133571764² = 35682832276143392, which contains 22 as substring.

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, 725842 + ... + 726025.

It is an arithmetic number, because the mean of its divisors is an integer number (20326152).

Almost surely, 2^133571764 is an apocalyptic number.

It is an amenable number.

133571764 is a deficient number, since it is larger than the sum of its proper divisors (110342060).

133571764 is a wasteful number, since it uses less digits than its factorization.

133571764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451894 (or 1451892 counting only the distinct ones).

The product of its digits is 52920, while the sum is 37.

The square root of 133571764 is about 11557.3251230551. The cubic root of 133571764 is about 511.1772930403.

The spelling of 133571764 in words is "one hundred thirty-three million, five hundred seventy-one thousand, seven hundred sixty-four".