64782080 has 144 divisors (see below), whose sum is σ = 174835584. Its totient is φ = 22794240.

The previous prime is 64782073. The next prime is 64782083. The reversal of 64782080 is 8028746.

It is a self number, because there is not a number n which added to its sum of digits gives 64782080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64782083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605387 + ... + 605493.

It is an arithmetic number, because the mean of its divisors is an integer number (1214136).

Almost surely, 2^64782080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64782080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87417792).

64782080 is an abundant number, since it is smaller than the sum of its proper divisors (110053504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64782080 is a wasteful number, since it uses less digits than its factorization.

64782080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 64782080 is about 8048.7315770872. The cubic root of 64782080 is about 401.6227412084.

It can be divided in two parts, 6478 and 2080, that added together give a palindrome (8558).

The spelling of 64782080 in words is "sixty-four million, seven hundred eighty-two thousand, eighty".