136734457 has 8 divisors (see below), whose sum is σ = 138704384. Its totient is φ = 134777088.

The previous prime is 136734443. The next prime is 136734461. The reversal of 136734457 is 754437631.

136734457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136734457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136734487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19993 + ... + 25945.

It is an arithmetic number, because the mean of its divisors is an integer number (17338048).

Almost surely, 2^136734457 is an apocalyptic number.

It is an amenable number.

136734457 is a deficient number, since it is larger than the sum of its proper divisors (1969927).

136734457 is a wasteful number, since it uses less digits than its factorization.

136734457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6279.

The product of its digits is 211680, while the sum is 40.

The square root of 136734457 is about 11693.3509739510. The cubic root of 136734457 is about 515.1803898816.

The spelling of 136734457 in words is "one hundred thirty-six million, seven hundred thirty-four thousand, four hundred fifty-seven".