136674457 has 2 divisors, whose sum is σ = 136674458. Its totient is φ = 136674456.

The previous prime is 136674427. The next prime is 136674481. The reversal of 136674457 is 754476631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107557641 + 29116816 = 10371^2 + 5396^2 .

It is an emirp because it is prime and its reverse (754476631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136674457 is a prime.

It is not a weakly prime, because it can be changed into another prime (136674427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68337228 + 68337229.

It is an arithmetic number, because the mean of its divisors is an integer number (68337229).

Almost surely, 2^136674457 is an apocalyptic number.

It is an amenable number.

136674457 is a deficient number, since it is larger than the sum of its proper divisors (1).

136674457 is an equidigital number, since it uses as much as digits as its factorization.

136674457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 43.

The square root of 136674457 is about 11690.7851318891. The cubic root of 136674457 is about 515.1050239827.

The spelling of 136674457 in words is "one hundred thirty-six million, six hundred seventy-four thousand, four hundred fifty-seven".