136867856 has 40 divisors (see below), whose sum is σ = 269191104. Its totient is φ = 67409280.

The previous prime is 136867837. The next prime is 136867859. The reversal of 136867856 is 658768631.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (136867859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483491 + ... + 483773.

Almost surely, 2^136867856 is an apocalyptic number.

136867856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

136867856 is a deficient number, since it is larger than the sum of its proper divisors (132323248).

136867856 is a wasteful number, since it uses less digits than its factorization.

136867856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 633 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 136867856 is about 11699.0536369400. The cubic root of 136867856 is about 515.3478731751.

The spelling of 136867856 in words is "one hundred thirty-six million, eight hundred sixty-seven thousand, eight hundred fifty-six".