64638148 has 24 divisors (see below), whose sum is σ = 120016512. Its totient is φ = 30355584.

The previous prime is 64638143. The next prime is 64638157. The reversal of 64638148 is 84183646.

64638148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 64638148.

It is not an unprimeable number, because it can be changed into a prime (64638143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65265 + ... + 66247.

It is an arithmetic number, because the mean of its divisors is an integer number (5000688).

Almost surely, 2^64638148 is an apocalyptic number.

64638148 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

64638148 is a deficient number, since it is larger than the sum of its proper divisors (55378364).

64638148 is a wasteful number, since it uses less digits than its factorization.

64638148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971 (or 1969 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 64638148 is about 8039.7853205170. The cubic root of 64638148 is about 401.3250805567.

The spelling of 64638148 in words is "sixty-four million, six hundred thirty-eight thousand, one hundred forty-eight".