136202977 has 4 divisors (see below), whose sum is σ = 137525440. Its totient is φ = 134880516.

The previous prime is 136202971. The next prime is 136202981. The reversal of 136202977 is 779202631.

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 a de Polignac number, because none of the positive numbers 2^k-136202977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136202971) 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, 661077 + ... + 661282.

It is an arithmetic number, because the mean of its divisors is an integer number (34381360).

Almost surely, 2^136202977 is an apocalyptic number.

It is an amenable number.

136202977 is a deficient number, since it is larger than the sum of its proper divisors (1322463).

136202977 is a wasteful number, since it uses less digits than its factorization.

136202977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322462.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 136202977 is about 11670.6031120932. The cubic root of 136202977 is about 514.5120296962.

The spelling of 136202977 in words is "one hundred thirty-six million, two hundred two thousand, nine hundred seventy-seven".