136987673 has 2 divisors, whose sum is σ = 136987674. Its totient is φ = 136987672.

The previous prime is 136987633. The next prime is 136987687. The reversal of 136987673 is 376789631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134258569 + 2729104 = 11587^2 + 1652^2 .

It is a cyclic number.

It is not a de Polignac number, because 136987673 - 2²⁴ = 120210457 is a prime.

It is not a weakly prime, because it can be changed into another prime (136987633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68493836 + 68493837.

It is an arithmetic number, because the mean of its divisors is an integer number (68493837).

Almost surely, 2^136987673 is an apocalyptic number.

It is an amenable number.

136987673 is a deficient number, since it is larger than the sum of its proper divisors (1).

136987673 is an equidigital number, since it uses as much as digits as its factorization.

136987673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The square root of 136987673 is about 11704.1733155315. The cubic root of 136987673 is about 515.4982114365.

The spelling of 136987673 in words is "one hundred thirty-six million, nine hundred eighty-seven thousand, six hundred seventy-three".