64327770 has 160 divisors (see below), whose sum is σ = 192099600. Its totient is φ = 15344640.

The previous prime is 64327751. The next prime is 64327799. The reversal of 64327770 is 7772346.

64327770 is a `hidden beast` number, since 643 + 2 + 7 + 7 + 7 + 0 = 666.

64327770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 23409 + 64304361 = 153^2 + 8019^2 .

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 431656 + ... + 431804.

Almost surely, 2^64327770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64327770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96049800).

64327770 is an abundant number, since it is smaller than the sum of its proper divisors (127771830).

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

64327770 is a wasteful number, since it uses less digits than its factorization.

64327770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The square root of 64327770 is about 8020.4594631480. The cubic root of 64327770 is about 400.6816917476.

The spelling of 64327770 in words is "sixty-four million, three hundred twenty-seven thousand, seven hundred seventy".