133612564 has 6 divisors (see below), whose sum is σ = 233821994. Its totient is φ = 66806280.

The previous prime is 133612561. The next prime is 133612613. The reversal of 133612564 is 465216331.

It can be written as a sum of positive squares in only one way, i.e., 118635664 + 14976900 = 10892^2 + 3870^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133612561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16701567 + ... + 16701574.

Almost surely, 2^133612564 is an apocalyptic number.

It is an amenable number.

133612564 is a deficient number, since it is larger than the sum of its proper divisors (100209430).

133612564 is a wasteful number, since it uses less digits than its factorization.

133612564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33403145 (or 33403143 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 133612564 is about 11559.0901025989. The cubic root of 133612564 is about 511.2293347537.

Adding to 133612564 its reverse (465216331), we get a palindrome (598828895).

The spelling of 133612564 in words is "one hundred thirty-three million, six hundred twelve thousand, five hundred sixty-four".