64850789 has 6 divisors (see below), whose sum is σ = 65224710. Its totient is φ = 64478120.

The previous prime is 64850771. The next prime is 64850827. The reversal of 64850789 is 98705846.

It can be written as a sum of positive squares in only one way, i.e., 40742689 + 24108100 = 6383^2 + 4910^2 .

It is not a de Polignac number, because 64850789 - 2¹² = 64846693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64850759) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131834 + ... + 132324.

It is an arithmetic number, because the mean of its divisors is an integer number (10870785).

Almost surely, 2^64850789 is an apocalyptic number.

It is an amenable number.

64850789 is a deficient number, since it is larger than the sum of its proper divisors (373921).

64850789 is an frugal number, since it uses more digits than its factorization.

64850789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 64850789 is about 8052.9987582267. The cubic root of 64850789 is about 401.7646803924.

The spelling of 64850789 in words is "sixty-four million, eight hundred fifty thousand, seven hundred eighty-nine".