64081788 has 24 divisors (see below), whose sum is σ = 152060160. Its totient is φ = 20998320.

The previous prime is 64081777. The next prime is 64081799. The reversal of 64081788 is 88718046.

It is an interprime number because it is at equal distance from previous prime (64081777) and next prime (64081799).

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 7 ways as a sum of consecutive naturals, for example, 44548 + ... + 45963.

It is an arithmetic number, because the mean of its divisors is an integer number (6335840).

Almost surely, 2^64081788 is an apocalyptic number.

It is an amenable number.

64081788 is an abundant number, since it is smaller than the sum of its proper divisors (87978372).

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

64081788 is a wasteful number, since it uses less digits than its factorization.

64081788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90577 (or 90575 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 64081788 is about 8005.1101179184. The cubic root of 64081788 is about 400.1703191349.

It can be divided in two parts, 640 and 81788, that added together give a palindrome (82428).

The spelling of 64081788 in words is "sixty-four million, eighty-one thousand, seven hundred eighty-eight".