133687396 has 6 divisors (see below), whose sum is σ = 233952950. Its totient is φ = 66843696.

The previous prime is 133687381. The next prime is 133687399. The reversal of 133687396 is 693786331.

It can be written as a sum of positive squares in only one way, i.e., 132940900 + 746496 = 11530^2 + 864^2 .

It is not an unprimeable number, because it can be changed into a prime (133687399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16710921 + ... + 16710928.

Almost surely, 2^133687396 is an apocalyptic number.

It is an amenable number.

133687396 is a deficient number, since it is larger than the sum of its proper divisors (100265554).

133687396 is a wasteful number, since it uses less digits than its factorization.

133687396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33421853 (or 33421851 counting only the distinct ones).

The product of its digits is 489888, while the sum is 46.

The square root of 133687396 is about 11562.3265824833. The cubic root of 133687396 is about 511.3247578502.

The spelling of 133687396 in words is "one hundred thirty-three million, six hundred eighty-seven thousand, three hundred ninety-six".