135646887 has 4 divisors (see below), whose sum is σ = 180862520. Its totient is φ = 90431256.

The previous prime is 135646883. The next prime is 135646937. The reversal of 135646887 is 788646531.

135646887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 135646887 - 2² = 135646883 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 (135646883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22607812 + ... + 22607817.

It is an arithmetic number, because the mean of its divisors is an integer number (45215630).

Almost surely, 2^135646887 is an apocalyptic number.

135646887 is a deficient number, since it is larger than the sum of its proper divisors (45215633).

135646887 is an equidigital number, since it uses as much as digits as its factorization.

135646887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45215632.

The product of its digits is 967680, while the sum is 48.

The square root of 135646887 is about 11646.7543547548. The cubic root of 135646887 is about 513.8108573961.

The spelling of 135646887 in words is "one hundred thirty-five million, six hundred forty-six thousand, eight hundred eighty-seven".