135605677 has 4 divisors (see below), whose sum is σ = 141501600. Its totient is φ = 129709756.

The previous prime is 135605663. The next prime is 135605689. The reversal of 135605677 is 776506531.

It is a happy number.

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: 776506531 = 37 ⋅20986663.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135605677 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 (135635677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2947927 + ... + 2947972.

It is an arithmetic number, because the mean of its divisors is an integer number (35375400).

Almost surely, 2^135605677 is an apocalyptic number.

It is an amenable number.

135605677 is a deficient number, since it is larger than the sum of its proper divisors (5895923).

135605677 is an equidigital number, since it uses as much as digits as its factorization.

135605677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5895922.

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 135605677 is about 11644.9850579552. The cubic root of 135605677 is about 513.7588196125.

The spelling of 135605677 in words is "one hundred thirty-five million, six hundred five thousand, six hundred seventy-seven".