122623997 has 2 divisors, whose sum is σ = 122623998. Its totient is φ = 122623996.

The previous prime is 122623981. The next prime is 122624023. The reversal of 122623997 is 799326221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106791556 + 15832441 = 10334^2 + 3979^2 .

It is a cyclic number.

It is not a de Polignac number, because 122623997 - 2⁴ = 122623981 is a prime.

It is equal to p_6982448 and since 122623997 and 6982448 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122623297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61311998 + 61311999.

It is an arithmetic number, because the mean of its divisors is an integer number (61311999).

Almost surely, 2^122623997 is an apocalyptic number.

It is an amenable number.

122623997 is a deficient number, since it is larger than the sum of its proper divisors (1).

122623997 is an equidigital number, since it uses as much as digits as its factorization.

122623997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 122623997 is about 11073.5720072613. The cubic root of 122623997 is about 496.8117088114.

The spelling of 122623997 in words is "one hundred twenty-two million, six hundred twenty-three thousand, nine hundred ninety-seven".