136021623 has 8 divisors (see below), whose sum is σ = 182747136. Its totient is φ = 89988600.

The previous prime is 136021621. The next prime is 136021631. The reversal of 136021623 is 326120631.

It is a happy number.

136021623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 136021623 - 2¹ = 136021621 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 136021593 and 136021602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136021621) 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, 172663 + ... + 173448.

It is an arithmetic number, because the mean of its divisors is an integer number (22843392).

Almost surely, 2^136021623 is an apocalyptic number.

136021623 is a deficient number, since it is larger than the sum of its proper divisors (46725513).

136021623 is a wasteful number, since it uses less digits than its factorization.

136021623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346245.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 136021623 is about 11662.8308313205. The cubic root of 136021623 is about 514.2835710118.

It can be divided in two parts, 13602 and 1623, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 136021623 in words is "one hundred thirty-six million, twenty-one thousand, six hundred twenty-three".