135645377 has 18 divisors (see below), whose sum is σ = 159935958. Its totient is φ = 114706368.

The previous prime is 135645361. The next prime is 135645379. The reversal of 135645377 is 773546531.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 24216241 + 111429136 = 4921^2 + 10556^2 .

It is not a de Polignac number, because 135645377 - 2⁴ = 135645361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135645379) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 582053 + ... + 582285.

It is an arithmetic number, because the mean of its divisors is an integer number (8885331).

Almost surely, 2^135645377 is an apocalyptic number.

It is an amenable number.

135645377 is a deficient number, since it is larger than the sum of its proper divisors (24290581).

135645377 is an equidigital number, since it uses as much as digits as its factorization.

135645377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 349 counting only the distinct ones).

The product of its digits is 264600, while the sum is 41.

The square root of 135645377 is about 11646.6895296475. The cubic root of 135645377 is about 513.8089508349.

The spelling of 135645377 in words is "one hundred thirty-five million, six hundred forty-five thousand, three hundred seventy-seven".