133687922 has 8 divisors (see below), whose sum is σ = 202599516. Its totient is φ = 66154752.

The previous prime is 133687909. The next prime is 133687969. The reversal of 133687922 is 229786331.

It can be written as a sum of positive squares in 2 ways, for example, as 123454321 + 10233601 = 11111^2 + 3199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 133687922.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344363 + ... + 344750.

Almost surely, 2^133687922 is an apocalyptic number.

133687922 is a deficient number, since it is larger than the sum of its proper divisors (68911594).

133687922 is an equidigital number, since it uses as much as digits as its factorization.

133687922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689212.

The product of its digits is 108864, while the sum is 41.

The square root of 133687922 is about 11562.3493287480. The cubic root of 133687922 is about 511.3254284606.

The spelling of 133687922 in words is "one hundred thirty-three million, six hundred eighty-seven thousand, nine hundred twenty-two".