122877613 has 2 divisors, whose sum is σ = 122877614. Its totient is φ = 122877612.

The previous prime is 122877571. The next prime is 122877631. The reversal of 122877613 is 316778221.

Together with next prime (122877631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119202724 + 3674889 = 10918^2 + 1917^2 .

It is a cyclic number.

It is not a de Polignac number, because 122877613 - 2²⁵ = 89323181 is a prime.

It is equal to p_6996151 and since 122877613 and 6996151 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 (122877113) 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 as a sum of consecutive naturals, namely, 61438806 + 61438807.

It is an arithmetic number, because the mean of its divisors is an integer number (61438807).

Almost surely, 2^122877613 is an apocalyptic number.

It is an amenable number.

122877613 is a deficient number, since it is larger than the sum of its proper divisors (1).

122877613 is an equidigital number, since it uses as much as digits as its factorization.

122877613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 122877613 is about 11085.0175011138. The cubic root of 122877613 is about 497.1539817634.

It can be divided in two parts, 12287 and 7613, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 122877613 in words is "one hundred twenty-two million, eight hundred seventy-seven thousand, six hundred thirteen".