64740913 has 12 divisors (see below), whose sum is σ = 69627600. Its totient is φ = 60176192.

The previous prime is 64740901. The next prime is 64740937. The reversal of 64740913 is 31904746.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-64740913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64740943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22638 + ... + 25336.

It is an arithmetic number, because the mean of its divisors is an integer number (5802300).

Almost surely, 2^64740913 is an apocalyptic number.

It is an amenable number.

64740913 is a deficient number, since it is larger than the sum of its proper divisors (4886687).

64740913 is a wasteful number, since it uses less digits than its factorization.

64740913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816 (or 2799 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 64740913 is about 8046.1738111975. The cubic root of 64740913 is about 401.5376502551.

The spelling of 64740913 in words is "sixty-four million, seven hundred forty thousand, nine hundred thirteen".