136857766 has 8 divisors (see below), whose sum is σ = 209160144. Its totient is φ = 67137720.

The previous prime is 136857761. The next prime is 136857781. The reversal of 136857766 is 667758631.

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

It is a super-2 number, since 2×136857766² = 37460096229021512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136857761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645450 + ... + 645661.

It is an arithmetic number, because the mean of its divisors is an integer number (26145018).

Almost surely, 2^136857766 is an apocalyptic number.

136857766 is a deficient number, since it is larger than the sum of its proper divisors (72302378).

136857766 is a wasteful number, since it uses less digits than its factorization.

136857766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291166.

The product of its digits is 1270080, while the sum is 49.

The square root of 136857766 is about 11698.6223975304. The cubic root of 136857766 is about 515.3352089212.

The spelling of 136857766 in words is "one hundred thirty-six million, eight hundred fifty-seven thousand, seven hundred sixty-six".