136648738 has 8 divisors (see below), whose sum is σ = 205447788. Its totient is φ = 68166144.

The previous prime is 136648717. The next prime is 136648747. The reversal of 136648738 is 837846631.

It can be written as a sum of positive squares in 2 ways, for example, as 130028409 + 6620329 = 11403^2 + 2573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78031 + ... + 79762.

Almost surely, 2^136648738 is an apocalyptic number.

136648738 is a deficient number, since it is larger than the sum of its proper divisors (68799050).

136648738 is a wasteful number, since it uses less digits than its factorization.

136648738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158228.

The product of its digits is 580608, while the sum is 46.

The square root of 136648738 is about 11689.6851112423. The cubic root of 136648738 is about 515.0727116363.

The spelling of 136648738 in words is "one hundred thirty-six million, six hundred forty-eight thousand, seven hundred thirty-eight".