122646609 has 8 divisors (see below), whose sum is σ = 181698720. Its totient is φ = 81764388.

The previous prime is 122646599. The next prime is 122646613. The reversal of 122646609 is 906646221.

122646609 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 46 + 609 = 666.

It is not a de Polignac number, because 122646609 - 2⁴ = 122646593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122646659) 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, 2271207 + ... + 2271260.

It is an arithmetic number, because the mean of its divisors is an integer number (22712340).

Almost surely, 2^122646609 is an apocalyptic number.

It is an amenable number.

122646609 is a deficient number, since it is larger than the sum of its proper divisors (59052111).

122646609 is an equidigital number, since it uses as much as digits as its factorization.

122646609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542476 (or 4542470 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 122646609 is about 11074.5929496302. The cubic root of 122646609 is about 496.8422444765.

The spelling of 122646609 in words is "one hundred twenty-two million, six hundred forty-six thousand, six hundred nine".