64620329 has 2 divisors, whose sum is σ = 64620330. Its totient is φ = 64620328.

The previous prime is 64620313. The next prime is 64620343. The reversal of 64620329 is 92302646.

64620329 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 can be written as a sum of positive squares in only one way, i.e., 41628304 + 22992025 = 6452^2 + 4795^2 .

It is a cyclic number.

It is not a de Polignac number, because 64620329 - 2⁴ = 64620313 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64620295 and 64620304.

It is not a weakly prime, because it can be changed into another prime (64620379) 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, 32310164 + 32310165.

It is an arithmetic number, because the mean of its divisors is an integer number (32310165).

Almost surely, 2^64620329 is an apocalyptic number.

It is an amenable number.

64620329 is a deficient number, since it is larger than the sum of its proper divisors (1).

64620329 is an equidigital number, since it uses as much as digits as its factorization.

64620329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 64620329 is about 8038.6770677768. The cubic root of 64620329 is about 401.2881989882.

The spelling of 64620329 in words is "sixty-four million, six hundred twenty thousand, three hundred twenty-nine".