136687783 has 2 divisors, whose sum is σ = 136687784. Its totient is φ = 136687782.

The previous prime is 136687739. The next prime is 136687799. The reversal of 136687783 is 387786631.

It is a strong prime.

It is an emirp because it is prime and its reverse (387786631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136687783 - 2¹⁷ = 136556711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136682783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68343891 + 68343892.

It is an arithmetic number, because the mean of its divisors is an integer number (68343892).

Almost surely, 2^136687783 is an apocalyptic number.

136687783 is a deficient number, since it is larger than the sum of its proper divisors (1).

136687783 is an equidigital number, since it uses as much as digits as its factorization.

136687783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 136687783 is about 11691.3550540560. The cubic root of 136687783 is about 515.1217646540.

The spelling of 136687783 in words is "one hundred thirty-six million, six hundred eighty-seven thousand, seven hundred eighty-three".