64785481 has 8 divisors (see below), whose sum is σ = 66240000. Its totient is φ = 63342960.

The previous prime is 64785473. The next prime is 64785517. The reversal of 64785481 is 18458746.

64785481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64785481 - 2³ = 64785473 is a prime.

It is a super-2 number, since 2×64785481² = 8394317096802722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64785431) 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, 8395 + ... + 14143.

It is an arithmetic number, because the mean of its divisors is an integer number (8280000).

Almost surely, 2^64785481 is an apocalyptic number.

It is an amenable number.

64785481 is a deficient number, since it is larger than the sum of its proper divisors (1454519).

64785481 is a wasteful number, since it uses less digits than its factorization.

64785481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5999.

The product of its digits is 215040, while the sum is 43.

The square root of 64785481 is about 8048.9428498406. The cubic root of 64785481 is about 401.6297693610.

The spelling of 64785481 in words is "sixty-four million, seven hundred eighty-five thousand, four hundred eighty-one".