64622147 has 2 divisors, whose sum is σ = 64622148. Its totient is φ = 64622146.

The previous prime is 64622113. The next prime is 64622149. The reversal of 64622147 is 74122646.

64622147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64622147 - 2¹² = 64618051 is a prime.

Together with 64622149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64622149) by changing a digit.

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 as a sum of consecutive naturals, namely, 32311073 + 32311074.

It is an arithmetic number, because the mean of its divisors is an integer number (32311074).

Almost surely, 2^64622147 is an apocalyptic number.

64622147 is a deficient number, since it is larger than the sum of its proper divisors (1).

64622147 is an equidigital number, since it uses as much as digits as its factorization.

64622147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 32.

The square root of 64622147 is about 8038.7901452893. The cubic root of 64622147 is about 401.2919621750.

The spelling of 64622147 in words is "sixty-four million, six hundred twenty-two thousand, one hundred forty-seven".