136403746 has 4 divisors (see below), whose sum is σ = 204605622. Its totient is φ = 68201872.

The previous prime is 136403741. The next prime is 136403797. The reversal of 136403746 is 647304631.

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

It can be written as a sum of positive squares in only one way, i.e., 132503121 + 3900625 = 11511^2 + 1975^2 .

It is not an unprimeable number, because it can be changed into a prime (136403741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34100935 + ... + 34100938.

Almost surely, 2^136403746 is an apocalyptic number.

136403746 is a deficient number, since it is larger than the sum of its proper divisors (68201876).

136403746 is an equidigital number, since it uses as much as digits as its factorization.

136403746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68201875.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 136403746 is about 11679.2014281799. The cubic root of 136403746 is about 514.7647098119.

The spelling of 136403746 in words is "one hundred thirty-six million, four hundred three thousand, seven hundred forty-six".