133106637 has 4 divisors (see below), whose sum is σ = 177475520. Its totient is φ = 88737756.

The previous prime is 133106627. The next prime is 133106683. The reversal of 133106637 is 736601331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 736601331 = 3 ⋅245533777.

It is not a de Polignac number, because 133106637 - 2⁴ = 133106621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133106627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22184437 + ... + 22184442.

It is an arithmetic number, because the mean of its divisors is an integer number (44368880).

Almost surely, 2^133106637 is an apocalyptic number.

It is an amenable number.

133106637 is a deficient number, since it is larger than the sum of its proper divisors (44368883).

133106637 is an equidigital number, since it uses as much as digits as its factorization.

133106637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44368882.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 133106637 is about 11537.1849686134. The cubic root of 133106637 is about 510.5832581197.

Adding to 133106637 its reverse (736601331), we get a palindrome (869707968).

The spelling of 133106637 in words is "one hundred thirty-three million, one hundred six thousand, six hundred thirty-seven".