133765650 has 36 divisors (see below), whose sum is σ = 359384922. Its totient is φ = 35670720.

The previous prime is 133765649. The next prime is 133765679. The reversal of 133765650 is 56567331.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 88566921 + 45198729 = 9411^2 + 6723^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 148179 + ... + 149078.

Almost surely, 2^133765650 is an apocalyptic number.

133765650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133765650 is an abundant number, since it is smaller than the sum of its proper divisors (225619272).

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

133765650 is a wasteful number, since it uses less digits than its factorization.

133765650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297275 (or 297267 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 133765650 is about 11565.7100949315. The cubic root of 133765650 is about 511.4245064780.

The spelling of 133765650 in words is "one hundred thirty-three million, seven hundred sixty-five thousand, six hundred fifty".