64740573 has 32 divisors (see below), whose sum is σ = 103749120. Its totient is φ = 39744000.

The previous prime is 64740563. The next prime is 64740587. The reversal of 64740573 is 37504746.

64740573 is a `hidden beast` number, since 6 + 47 + 40 + 573 = 666.

It is not a de Polignac number, because 64740573 - 2⁶ = 64740509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64740563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20073 + ... + 23073.

It is an arithmetic number, because the mean of its divisors is an integer number (3242160).

Almost surely, 2^64740573 is an apocalyptic number.

It is an amenable number.

64740573 is a deficient number, since it is larger than the sum of its proper divisors (39008547).

64740573 is a wasteful number, since it uses less digits than its factorization.

64740573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074 (or 3068 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 64740573 is about 8046.1526831151. The cubic root of 64740573 is about 401.5369473352.

The spelling of 64740573 in words is "sixty-four million, seven hundred forty thousand, five hundred seventy-three".