136993623 has 8 divisors (see below), whose sum is σ = 196708848. Its totient is φ = 84303744.

The previous prime is 136993621. The next prime is 136993639. The reversal of 136993623 is 326399631.

136993623 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 136993623 - 2¹ = 136993621 is a prime.

It is a super-2 number, since 2×136993623² = 37534505485332258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136993621) 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, 1756290 + ... + 1756367.

It is an arithmetic number, because the mean of its divisors is an integer number (24588606).

Almost surely, 2^136993623 is an apocalyptic number.

136993623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

136993623 is a deficient number, since it is larger than the sum of its proper divisors (59715225).

136993623 is a wasteful number, since it uses less digits than its factorization.

136993623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512673.

The product of its digits is 157464, while the sum is 42.

The square root of 136993623 is about 11704.4274956104. The cubic root of 136993623 is about 515.5056748086.

The spelling of 136993623 in words is "one hundred thirty-six million, nine hundred ninety-three thousand, six hundred twenty-three".