64520603 has 12 divisors (see below), whose sum is σ = 75602520. Its totient is φ = 54899712.

The previous prime is 64520591. The next prime is 64520609. The reversal of 64520603 is 30602546.

64520603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64520603 - 2⁴ = 64520587 is a prime.

It is a super-2 number, since 2×64520603² = 8325816422967218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64520609) 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 11 ways as a sum of consecutive naturals, for example, 2075 + ... + 11547.

It is an arithmetic number, because the mean of its divisors is an integer number (6300210).

Almost surely, 2^64520603 is an apocalyptic number.

64520603 is a deficient number, since it is larger than the sum of its proper divisors (11081917).

64520603 is a wasteful number, since it uses less digits than its factorization.

64520603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9626 (or 9619 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 64520603 is about 8032.4717864428. The cubic root of 64520603 is about 401.0816619653.

The spelling of 64520603 in words is "sixty-four million, five hundred twenty thousand, six hundred three".