122807647 has 4 divisors (see below), whose sum is σ = 126769216. Its totient is φ = 118846080.

The previous prime is 122807627. The next prime is 122807651. The reversal of 122807647 is 746708221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122807647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122807627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1980738 + ... + 1980799.

It is an arithmetic number, because the mean of its divisors is an integer number (31692304).

Almost surely, 2^122807647 is an apocalyptic number.

122807647 is a deficient number, since it is larger than the sum of its proper divisors (3961569).

122807647 is an equidigital number, since it uses as much as digits as its factorization.

122807647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961568.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 122807647 is about 11081.8611703991. The cubic root of 122807647 is about 497.0596047144.

The spelling of 122807647 in words is "one hundred twenty-two million, eight hundred seven thousand, six hundred forty-seven".