136917986 has 8 divisors (see below), whose sum is σ = 206298624. Its totient is φ = 68151780.

The previous prime is 136917967. The next prime is 136918013. The reversal of 136917986 is 689719631.

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, 153050 + ... + 153941.

It is an arithmetic number, because the mean of its divisors is an integer number (25787328).

Almost surely, 2^136917986 is an apocalyptic number.

136917986 is a deficient number, since it is larger than the sum of its proper divisors (69380638).

136917986 is a wasteful number, since it uses less digits than its factorization.

136917986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307216.

The product of its digits is 489888, while the sum is 50.

The square root of 136917986 is about 11701.1959217851. The cubic root of 136917986 is about 515.4107835769.

The spelling of 136917986 in words is "one hundred thirty-six million, nine hundred seventeen thousand, nine hundred eighty-six".