135771677 has 4 divisors (see below), whose sum is σ = 135897216. Its totient is φ = 135646140.

The previous prime is 135771653. The next prime is 135771689. The reversal of 135771677 is 776177531.

135771677 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 776177531 = 19 ⋅40851449.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135771677 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 (135771577) 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, 61133 + ... + 63314.

It is an arithmetic number, because the mean of its divisors is an integer number (33974304).

Almost surely, 2^135771677 is an apocalyptic number.

It is an amenable number.

135771677 is a deficient number, since it is larger than the sum of its proper divisors (125539).

135771677 is a wasteful number, since it uses less digits than its factorization.

135771677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125538.

The product of its digits is 216090, while the sum is 44.

The square root of 135771677 is about 11652.1104097069. The cubic root of 135771677 is about 513.9683712817.

The spelling of 135771677 in words is "one hundred thirty-five million, seven hundred seventy-one thousand, six hundred seventy-seven".