136666351 has 4 divisors (see below), whose sum is σ = 137742592. Its totient is φ = 135590112.

The previous prime is 136666339. The next prime is 136666363. The reversal of 136666351 is 153666631.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (136666339) and next prime (136666363).

It is a cyclic number.

It is not a de Polignac number, because 136666351 - 2⁵ = 136666319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136666351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136664351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537930 + ... + 538183.

It is an arithmetic number, because the mean of its divisors is an integer number (34435648).

Almost surely, 2^136666351 is an apocalyptic number.

136666351 is a deficient number, since it is larger than the sum of its proper divisors (1076241).

136666351 is a wasteful number, since it uses less digits than its factorization.

136666351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076240.

The product of its digits is 58320, while the sum is 37.

The square root of 136666351 is about 11690.4384434460. The cubic root of 136666351 is about 515.0948403586.

The spelling of 136666351 in words is "one hundred thirty-six million, six hundred sixty-six thousand, three hundred fifty-one".