135977215 has 8 divisors (see below), whose sum is σ = 178006608. Its totient is φ = 98892480.

The previous prime is 135977213. The next prime is 135977227. The reversal of 135977215 is 512779531.

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

It is not a de Polignac number, because 135977215 - 2¹ = 135977213 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 (135977213) 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, 1236102 + ... + 1236211.

It is an arithmetic number, because the mean of its divisors is an integer number (22250826).

Almost surely, 2^135977215 is an apocalyptic number.

135977215 is a deficient number, since it is larger than the sum of its proper divisors (42029393).

135977215 is a wasteful number, since it uses less digits than its factorization.

135977215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472329.

The product of its digits is 66150, while the sum is 40.

The square root of 135977215 is about 11660.9268499549. The cubic root of 135977215 is about 514.2275975811.

The spelling of 135977215 in words is "one hundred thirty-five million, nine hundred seventy-seven thousand, two hundred fifteen".