122776655 has 4 divisors (see below), whose sum is σ = 147331992. Its totient is φ = 98221320.

The previous prime is 122776639. The next prime is 122776663. The reversal of 122776655 is 556677221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556677221 = 409 ⋅1361069.

It is not a de Polignac number, because 122776655 - 2⁴ = 122776639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12277661 + ... + 12277670.

It is an arithmetic number, because the mean of its divisors is an integer number (36832998).

Almost surely, 2^122776655 is an apocalyptic number.

122776655 is a deficient number, since it is larger than the sum of its proper divisors (24555337).

122776655 is an equidigital number, since it uses as much as digits as its factorization.

122776655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24555336.

The product of its digits is 176400, while the sum is 41.

The square root of 122776655 is about 11080.4627610944. The cubic root of 122776655 is about 497.0177881888.

The spelling of 122776655 in words is "one hundred twenty-two million, seven hundred seventy-six thousand, six hundred fifty-five".