64367789 has 2 divisors, whose sum is σ = 64367790. Its totient is φ = 64367788.

The previous prime is 64367783. The next prime is 64367803. The reversal of 64367789 is 98776346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63282025 + 1085764 = 7955^2 + 1042^2 .

It is a cyclic number.

It is not a de Polignac number, because 64367789 - 2⁴ = 64367773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64367783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32183894 + 32183895.

It is an arithmetic number, because the mean of its divisors is an integer number (32183895).

Almost surely, 2^64367789 is an apocalyptic number.

It is an amenable number.

64367789 is a deficient number, since it is larger than the sum of its proper divisors (1).

64367789 is an equidigital number, since it uses as much as digits as its factorization.

64367789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 50.

The square root of 64367789 is about 8022.9538824550. The cubic root of 64367789 is about 400.7647639916.

It can be divided in two parts, 64367 and 789, that added together give a palindrome (65156).

The spelling of 64367789 in words is "sixty-four million, three hundred sixty-seven thousand, seven hundred eighty-nine".