136863612 has 72 divisors (see below), whose sum is σ = 369292560. Its totient is φ = 42612480.

The previous prime is 136863607. The next prime is 136863613. The reversal of 136863612 is 216368631.

136863612 is a `hidden beast` number, since 1 + 3 + 6 + 8 + 636 + 12 = 666.

136863612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136863613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48562 + ... + 51302.

Almost surely, 2^136863612 is an apocalyptic number.

136863612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136863612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184646280).

136863612 is an abundant number, since it is smaller than the sum of its proper divisors (232428948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136863612 is a wasteful number, since it uses less digits than its factorization.

136863612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843 (or 2838 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 136863612 is about 11698.8722533413. The cubic root of 136863612 is about 515.3425464825.

It can be divided in two parts, 1368 and 63612, that added together give a triangular number (64980 = T₃₆₀).

The spelling of 136863612 in words is "one hundred thirty-six million, eight hundred sixty-three thousand, six hundred twelve".