136993786 has 16 divisors (see below), whose sum is σ = 222640704. Its totient is φ = 62967744.

The previous prime is 136993783. The next prime is 136993841. The reversal of 136993786 is 687399631.

It is a super-2 number, since 2×136993786² = 37534594805227592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136993783) 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, 45390 + ... + 48313.

It is an arithmetic number, because the mean of its divisors is an integer number (13915044).

Almost surely, 2^136993786 is an apocalyptic number.

136993786 is a deficient number, since it is larger than the sum of its proper divisors (85646918).

136993786 is a wasteful number, since it uses less digits than its factorization.

136993786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93765.

The product of its digits is 1469664, while the sum is 52.

The square root of 136993786 is about 11704.4344587853. The cubic root of 136993786 is about 515.5058792644.

The spelling of 136993786 in words is "one hundred thirty-six million, nine hundred ninety-three thousand, seven hundred eighty-six".