64329493 has 2 divisors, whose sum is σ = 64329494. Its totient is φ = 64329492.

The previous prime is 64329481. The next prime is 64329521. The reversal of 64329493 is 39492346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61826769 + 2502724 = 7863^2 + 1582^2 .

It is a cyclic number.

It is not a de Polignac number, because 64329493 - 2²¹ = 62232341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64329443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32164746 + 32164747.

It is an arithmetic number, because the mean of its divisors is an integer number (32164747).

Almost surely, 2^64329493 is an apocalyptic number.

It is an amenable number.

64329493 is a deficient number, since it is larger than the sum of its proper divisors (1).

64329493 is an equidigital number, since it uses as much as digits as its factorization.

64329493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 40.

The square root of 64329493 is about 8020.5668752277. The cubic root of 64329493 is about 400.6852690953.

The spelling of 64329493 in words is "sixty-four million, three hundred twenty-nine thousand, four hundred ninety-three".