136977 has 4 divisors (see below), whose sum is σ = 182640. Its totient is φ = 91316.

The previous prime is 136973. The next prime is 136979. The reversal of 136977 is 779631.

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.

It is a cyclic number.

It is not a de Polignac number, because 136977 - 2² = 136973 is a prime.

It is a D-number.

136977 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136977.

It is not an unprimeable number, because it can be changed into a prime (136973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22827 + ... + 22832.

It is an arithmetic number, because the mean of its divisors is an integer number (45660).

2¹³⁶⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

136977 is a deficient number, since it is larger than the sum of its proper divisors (45663).

136977 is an equidigital number, since it uses as much as digits as its factorization.

136977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45662.

The product of its digits is 7938, while the sum is 33.

The square root of 136977 is about 370.1040394268. The cubic root of 136977 is about 51.5484823236.

The spelling of 136977 in words is "one hundred thirty-six thousand, nine hundred seventy-seven".