64526320 has 20 divisors (see below), whose sum is σ = 150023880. Its totient is φ = 25810496.

The previous prime is 64526317. The next prime is 64526323. The reversal of 64526320 is 2362546.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64526317) and next prime (64526323).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64526323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403210 + ... + 403369.

It is an arithmetic number, because the mean of its divisors is an integer number (7501194).

Almost surely, 2^64526320 is an apocalyptic number.

It is an amenable number.

64526320 is an abundant number, since it is smaller than the sum of its proper divisors (85497560).

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

64526320 is a wasteful number, since it uses less digits than its factorization.

64526320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806592 (or 806586 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 64526320 is about 8032.8276466012. The cubic root of 64526320 is about 401.0935078772.

Adding to 64526320 its reverse (2362546), we get a palindrome (66888866).

It can be divided in two parts, 64526 and 320, that added together give a palindrome (64846).

The spelling of 64526320 in words is "sixty-four million, five hundred twenty-six thousand, three hundred twenty".