133879565 has 8 divisors (see below), whose sum is σ = 161077248. Its totient is φ = 106822480.

The previous prime is 133879553. The next prime is 133879609. The reversal of 133879565 is 565978331.

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

It is a de Polignac number, because none of the positive numbers 2^k-133879565 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33041 + ... + 36870.

It is an arithmetic number, because the mean of its divisors is an integer number (20134656).

Almost surely, 2^133879565 is an apocalyptic number.

It is an amenable number.

133879565 is a deficient number, since it is larger than the sum of its proper divisors (27197683).

133879565 is an equidigital number, since it uses as much as digits as its factorization.

133879565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70299.

The product of its digits is 680400, while the sum is 47.

The square root of 133879565 is about 11570.6337337244. The cubic root of 133879565 is about 511.5696418763.

The spelling of 133879565 in words is "one hundred thirty-three million, eight hundred seventy-nine thousand, five hundred sixty-five".