133963765 has 12 divisors (see below), whose sum is σ = 174074724. Its totient is φ = 98926464.

The previous prime is 133963759. The next prime is 133963777. The reversal of 133963765 is 567369331.

It can be written as a sum of positive squares in 6 ways, for example, as 20711601 + 113252164 = 4551^2 + 10642^2 .

It is not a de Polignac number, because 133963765 - 2⁷ = 133963637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78424 + ... + 80113.

It is an arithmetic number, because the mean of its divisors is an integer number (14506227).

Almost surely, 2^133963765 is an apocalyptic number.

It is an amenable number.

133963765 is a deficient number, since it is larger than the sum of its proper divisors (40110959).

133963765 is a wasteful number, since it uses less digits than its factorization.

133963765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158568 (or 158555 counting only the distinct ones).

The product of its digits is 306180, while the sum is 43.

The square root of 133963765 is about 11574.2716833501. The cubic root of 133963765 is about 511.6768654516.

It can be divided in two parts, 13396 and 3765, that added together give a square (17161 = 131²).

The spelling of 133963765 in words is "one hundred thirty-three million, nine hundred sixty-three thousand, seven hundred sixty-five".