64545760 has 48 divisors (see below), whose sum is σ = 156625056. Its totient is φ = 25118208.

The previous prime is 64545749. The next prime is 64545763. The reversal of 64545760 is 6754546.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64545763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469 + ... + 11371.

It is an arithmetic number, because the mean of its divisors is an integer number (3263022).

Almost surely, 2^64545760 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 64545760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78312528).

64545760 is an abundant number, since it is smaller than the sum of its proper divisors (92079296).

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

64545760 is a wasteful number, since it uses less digits than its factorization.

64545760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10955 (or 10947 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 64545760 is about 8034.0375901535. The cubic root of 64545760 is about 401.1337833022.

The spelling of 64545760 in words is "sixty-four million, five hundred forty-five thousand, seven hundred sixty".