122636564 has 12 divisors (see below), whose sum is σ = 225909600. Its totient is φ = 58090968.

The previous prime is 122636557. The next prime is 122636573. The reversal of 122636564 is 465636221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806744 + ... + 806895.

It is an arithmetic number, because the mean of its divisors is an integer number (18825800).

Almost surely, 2^122636564 is an apocalyptic number.

It is an amenable number.

122636564 is a deficient number, since it is larger than the sum of its proper divisors (103273036).

122636564 is a wasteful number, since it uses less digits than its factorization.

122636564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613662 (or 1613660 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 122636564 is about 11074.1394248041. The cubic root of 122636564 is about 496.8286799852.

The spelling of 122636564 in words is "one hundred twenty-two million, six hundred thirty-six thousand, five hundred sixty-four".