133520705 has 8 divisors (see below), whose sum is σ = 160864704. Its totient is φ = 106390000.

The previous prime is 133520677. The next prime is 133520707. The reversal of 133520705 is 507025331.

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

It is not a de Polignac number, because 133520705 - 2⁸ = 133520449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133520707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51941 + ... + 54450.

It is an arithmetic number, because the mean of its divisors is an integer number (20108088).

Almost surely, 2^133520705 is an apocalyptic number.

It is an amenable number.

133520705 is a deficient number, since it is larger than the sum of its proper divisors (27343999).

133520705 is a wasteful number, since it uses less digits than its factorization.

133520705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106647.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 133520705 is about 11555.1159665319. The cubic root of 133520705 is about 511.1121507103.

The spelling of 133520705 in words is "one hundred thirty-three million, five hundred twenty thousand, seven hundred five".