136633973 has 4 divisors (see below), whose sum is σ = 156153120. Its totient is φ = 117114828.

The previous prime is 136633967. The next prime is 136633979. The reversal of 136633973 is 379336631.

It is a happy number.

136633973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 379336631 = 23 ⋅16492897.

It is an interprime number because it is at equal distance from previous prime (136633967) and next prime (136633979).

It is a cyclic number.

It is not a de Polignac number, because 136633973 - 2¹⁶ = 136568437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136633973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136633979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9759563 + ... + 9759576.

It is an arithmetic number, because the mean of its divisors is an integer number (39038280).

Almost surely, 2^136633973 is an apocalyptic number.

It is an amenable number.

136633973 is a deficient number, since it is larger than the sum of its proper divisors (19519147).

136633973 is an equidigital number, since it uses as much as digits as its factorization.

136633973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19519146.

The product of its digits is 183708, while the sum is 41.

The square root of 136633973 is about 11689.0535545013. The cubic root of 136633973 is about 515.0541596355.

The spelling of 136633973 in words is "one hundred thirty-six million, six hundred thirty-three thousand, nine hundred seventy-three".