64965447 has 12 divisors (see below), whose sum is σ = 93977520. Its totient is φ = 43246368.

The previous prime is 64965391. The next prime is 64965457. The reversal of 64965447 is 74456946.

It is not a de Polignac number, because 64965447 - 2⁷ = 64965319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64965457) 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, 1579 + ... + 11507.

It is an arithmetic number, because the mean of its divisors is an integer number (7831460).

Almost surely, 2^64965447 is an apocalyptic number.

64965447 is a deficient number, since it is larger than the sum of its proper divisors (29012073).

64965447 is a wasteful number, since it uses less digits than its factorization.

64965447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662 (or 10659 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 64965447 is about 8060.1145773494. The cubic root of 64965447 is about 402.0013180324.

The spelling of 64965447 in words is "sixty-four million, nine hundred sixty-five thousand, four hundred forty-seven".