64540752 has 20 divisors (see below), whose sum is σ = 166730400. Its totient is φ = 21513568.

The previous prime is 64540733. The next prime is 64540757. The reversal of 64540752 is 25704546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64540757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672252 + ... + 672347.

It is an arithmetic number, because the mean of its divisors is an integer number (8336520).

Almost surely, 2^64540752 is an apocalyptic number.

It is an amenable number.

64540752 is an abundant number, since it is smaller than the sum of its proper divisors (102189648).

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

64540752 is a wasteful number, since it uses less digits than its factorization.

64540752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344610 (or 1344604 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 64540752 is about 8033.7259101864. The cubic root of 64540752 is about 401.1234085957.

The spelling of 64540752 in words is "sixty-four million, five hundred forty thousand, seven hundred fifty-two".