136816487 has 2 divisors, whose sum is σ = 136816488. Its totient is φ = 136816486.

The previous prime is 136816481. The next prime is 136816501. The reversal of 136816487 is 784618631.

It is a weak prime.

It is an emirp because it is prime and its reverse (784618631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136816487 - 2⁸ = 136816231 is a prime.

It is a super-2 number, since 2×136816487² = 37437502230042338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136816481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68408243 + 68408244.

It is an arithmetic number, because the mean of its divisors is an integer number (68408244).

Almost surely, 2^136816487 is an apocalyptic number.

136816487 is a deficient number, since it is larger than the sum of its proper divisors (1).

136816487 is an equidigital number, since it uses as much as digits as its factorization.

136816487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 136816487 is about 11696.8579969152. The cubic root of 136816487 is about 515.2833919587.

The spelling of 136816487 in words is "one hundred thirty-six million, eight hundred sixteen thousand, four hundred eighty-seven".