215980135 has 8 divisors (see below), whose sum is σ = 296201376. Its totient is φ = 148100640.

The previous prime is 215980133. The next prime is 215980151. The reversal of 215980135 is 531089512.

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

It is not a de Polignac number, because 215980135 - 2¹ = 215980133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215980135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215980133) 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 in 7 ways as a sum of consecutive naturals, for example, 3085396 + ... + 3085465.

It is an arithmetic number, because the mean of its divisors is an integer number (37025172).

Almost surely, 2^215980135 is an apocalyptic number.

215980135 is a deficient number, since it is larger than the sum of its proper divisors (80221241).

215980135 is an equidigital number, since it uses as much as digits as its factorization.

215980135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6170873.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 215980135 is about 14696.2626201358. The cubic root of 215980135 is about 599.9816059176.

The spelling of 215980135 in words is "two hundred fifteen million, nine hundred eighty thousand, one hundred thirty-five".