122736647 has 4 divisors (see below), whose sum is σ = 133894536. Its totient is φ = 111578760.

The previous prime is 122736641. The next prime is 122736667. The reversal of 122736647 is 746637221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746637221 = 11 ⋅67876111.

It is a cyclic number.

It is not a de Polignac number, because 122736647 - 2⁴ = 122736631 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 122736647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122736641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5578928 + ... + 5578949.

It is an arithmetic number, because the mean of its divisors is an integer number (33473634).

Almost surely, 2^122736647 is an apocalyptic number.

122736647 is a deficient number, since it is larger than the sum of its proper divisors (11157889).

122736647 is a wasteful number, since it uses less digits than its factorization.

122736647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11157888.

The product of its digits is 84672, while the sum is 38.

The square root of 122736647 is about 11078.6572742368. The cubic root of 122736647 is about 496.9637962527.

The spelling of 122736647 in words is "one hundred twenty-two million, seven hundred thirty-six thousand, six hundred forty-seven".