122686897 has 4 divisors (see below), whose sum is σ = 122787316. Its totient is φ = 122586480.

The previous prime is 122686877. The next prime is 122686903. The reversal of 122686897 is 798686221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 798686221 = 2423 ⋅329627.

It can be written as a sum of positive squares in 2 ways, for example, as 71978256 + 50708641 = 8484^2 + 7121^2 .

It is a cyclic number.

It is not a de Polignac number, because 122686897 - 2⁷ = 122686769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122686897.

It is not an unprimeable number, because it can be changed into a prime (122686847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48354 + ... + 50827.

It is an arithmetic number, because the mean of its divisors is an integer number (30696829).

Almost surely, 2^122686897 is an apocalyptic number.

It is an amenable number.

122686897 is a deficient number, since it is larger than the sum of its proper divisors (100419).

122686897 is an equidigital number, since it uses as much as digits as its factorization.

122686897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100418.

The product of its digits is 580608, while the sum is 49.

The square root of 122686897 is about 11076.4117384648. The cubic root of 122686897 is about 496.8966408411.

The spelling of 122686897 in words is "one hundred twenty-two million, six hundred eighty-six thousand, eight hundred ninety-seven".