136861057 has 8 divisors (see below), whose sum is σ = 138964896. Its totient is φ = 134763552.

The previous prime is 136861019. The next prime is 136861079. The reversal of 136861057 is 750168631.

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-136861057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136861007) 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, 59238 + ... + 61504.

It is an arithmetic number, because the mean of its divisors is an integer number (17370612).

Almost surely, 2^136861057 is an apocalyptic number.

It is an amenable number.

136861057 is a deficient number, since it is larger than the sum of its proper divisors (2103839).

136861057 is an equidigital number, since it uses as much as digits as its factorization.

136861057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 136861057 is about 11698.7630542720. The cubic root of 136861057 is about 515.3393396199.

The spelling of 136861057 in words is "one hundred thirty-six million, eight hundred sixty-one thousand, fifty-seven".