64725380 has 12 divisors (see below), whose sum is σ = 135923340. Its totient is φ = 25890144.

The previous prime is 64725379. The next prime is 64725391. The reversal of 64725380 is 8352746.

It is a happy number.

64725380 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 2 ways, for example, as 14485636 + 50239744 = 3806^2 + 7088^2 .

It is a super-2 number, since 2×64725380² = 8378749632288800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64725380.

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 3 ways as a sum of consecutive naturals, for example, 1618115 + ... + 1618154.

It is an arithmetic number, because the mean of its divisors is an integer number (11326945).

Almost surely, 2^64725380 is an apocalyptic number.

It is an amenable number.

64725380 is an abundant number, since it is smaller than the sum of its proper divisors (71197960).

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

64725380 is a wasteful number, since it uses less digits than its factorization.

64725380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236278 (or 3236276 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 64725380 is about 8045.2085119032. The cubic root of 64725380 is about 401.5055346376.

The spelling of 64725380 in words is "sixty-four million, seven hundred twenty-five thousand, three hundred eighty".