64581468 has 48 divisors (see below), whose sum is σ = 172913664. Its totient is φ = 18377280.

The previous prime is 64581457. The next prime is 64581481. The reversal of 64581468 is 86418546.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21346 + ... + 24182.

It is an arithmetic number, because the mean of its divisors is an integer number (3602368).

Almost surely, 2^64581468 is an apocalyptic number.

It is an amenable number.

64581468 is an abundant number, since it is smaller than the sum of its proper divisors (108332196).

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

64581468 is a wasteful number, since it uses less digits than its factorization.

64581468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122 (or 3120 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 64581468 is about 8036.2595776891. The cubic root of 64581468 is about 401.2077413983.

The spelling of 64581468 in words is "sixty-four million, five hundred eighty-one thousand, four hundred sixty-eight".