64788845 has 12 divisors (see below), whose sum is σ = 85457820. Its totient is φ = 47118720.

The previous prime is 64788833. The next prime is 64788847. The reversal of 64788845 is 54888746.

It can be written as a sum of positive squares in 2 ways, for example, as 13823524 + 50965321 = 3718^2 + 7139^2 .

It is not a de Polignac number, because 64788845 - 2⁶ = 64788781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64788793 and 64788802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64788847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52940 + ... + 54149.

It is an arithmetic number, because the mean of its divisors is an integer number (7121485).

Almost surely, 2^64788845 is an apocalyptic number.

It is an amenable number.

64788845 is a deficient number, since it is larger than the sum of its proper divisors (20668975).

64788845 is a wasteful number, since it uses less digits than its factorization.

64788845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107116 (or 107105 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 50.

The square root of 64788845 is about 8049.1518186701. The cubic root of 64788845 is about 401.6367208113.

Subtracting from 64788845 its reverse (54888746), we obtain a palindrome (9900099).

The spelling of 64788845 in words is "sixty-four million, seven hundred eighty-eight thousand, eight hundred forty-five".