122636387 has 8 divisors (see below), whose sum is σ = 126337200. Its totient is φ = 118974240.

The previous prime is 122636359. The next prime is 122636399. The reversal of 122636387 is 783636221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122636387 - 2⁶ = 122636323 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 122636387.

It is not an unprimeable number, because it can be changed into a prime (122636347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3164 + ... + 15977.

It is an arithmetic number, because the mean of its divisors is an integer number (15792150).

Almost surely, 2^122636387 is an apocalyptic number.

122636387 is a deficient number, since it is larger than the sum of its proper divisors (3700813).

122636387 is a wasteful number, since it uses less digits than its factorization.

122636387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19333.

The product of its digits is 72576, while the sum is 38.

The square root of 122636387 is about 11074.1314332096. The cubic root of 122636387 is about 496.8284409626.

The spelling of 122636387 in words is "one hundred twenty-two million, six hundred thirty-six thousand, three hundred eighty-seven".