136660754 has 4 divisors (see below), whose sum is σ = 204991134. Its totient is φ = 68330376.

The previous prime is 136660747. The next prime is 136660817. The reversal of 136660754 is 457066631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 457066631 = 7 ⋅65295233.

It can be written as a sum of positive squares in only one way, i.e., 135606025 + 1054729 = 11645^2 + 1027^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34165187 + ... + 34165190.

Almost surely, 2^136660754 is an apocalyptic number.

136660754 is a deficient number, since it is larger than the sum of its proper divisors (68330380).

136660754 is an equidigital number, since it uses as much as digits as its factorization.

136660754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68330379.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 136660754 is about 11690.1990573300. The cubic root of 136660754 is about 515.0878085737.

The spelling of 136660754 in words is "one hundred thirty-six million, six hundred sixty thousand, seven hundred fifty-four".