122487647 has 2 divisors, whose sum is σ = 122487648. Its totient is φ = 122487646.

The previous prime is 122487577. The next prime is 122487679. The reversal of 122487647 is 746784221.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (746784221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122487647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122487697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61243823 + 61243824.

It is an arithmetic number, because the mean of its divisors is an integer number (61243824).

Almost surely, 2^122487647 is an apocalyptic number.

122487647 is a deficient number, since it is larger than the sum of its proper divisors (1).

122487647 is an equidigital number, since it uses as much as digits as its factorization.

122487647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 41.

The square root of 122487647 is about 11067.4137448638. The cubic root of 122487647 is about 496.6274996265.

The spelling of 122487647 in words is "one hundred twenty-two million, four hundred eighty-seven thousand, six hundred forty-seven".