136670437 has 2 divisors, whose sum is σ = 136670438. Its totient is φ = 136670436.

The previous prime is 136670423. The next prime is 136670483. The reversal of 136670437 is 734076631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136445761 + 224676 = 11681^2 + 474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136670437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136670396 and 136670405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136640437) 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, 68335218 + 68335219.

It is an arithmetic number, because the mean of its divisors is an integer number (68335219).

Almost surely, 2^136670437 is an apocalyptic number.

It is an amenable number.

136670437 is a deficient number, since it is larger than the sum of its proper divisors (1).

136670437 is an equidigital number, since it uses as much as digits as its factorization.

136670437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 136670437 is about 11690.6132003415. The cubic root of 136670437 is about 515.0999736791.

The spelling of 136670437 in words is "one hundred thirty-six million, six hundred seventy thousand, four hundred thirty-seven".