122564643 has 8 divisors (see below), whose sum is σ = 169054800. Its totient is φ = 78892128.

The previous prime is 122564593. The next prime is 122564711. The reversal of 122564643 is 346465221.

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

It is not a de Polignac number, because 122564643 - 2⁹ = 122564131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122563643) 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, 704308 + ... + 704481.

It is an arithmetic number, because the mean of its divisors is an integer number (21131850).

Almost surely, 2^122564643 is an apocalyptic number.

122564643 is a deficient number, since it is larger than the sum of its proper divisors (46490157).

122564643 is a wasteful number, since it uses less digits than its factorization.

122564643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408821.

The product of its digits is 34560, while the sum is 33.

The square root of 122564643 is about 11070.8916985038. The cubic root of 122564643 is about 496.7315382036.

The spelling of 122564643 in words is "one hundred twenty-two million, five hundred sixty-four thousand, six hundred forty-three".