64642548 has 12 divisors (see below), whose sum is σ = 150832640. Its totient is φ = 21547512.

The previous prime is 64642519. The next prime is 64642549. The reversal of 64642548 is 84524646.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64642549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2693428 + ... + 2693451.

Almost surely, 2^64642548 is an apocalyptic number.

It is an amenable number.

64642548 is an abundant number, since it is smaller than the sum of its proper divisors (86190092).

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

64642548 is a wasteful number, since it uses less digits than its factorization.

64642548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5386886 (or 5386884 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The square root of 64642548 is about 8040.0589550077. The cubic root of 64642548 is about 401.3341865843.

The spelling of 64642548 in words is "sixty-four million, six hundred forty-two thousand, five hundred forty-eight".