64744463 has 4 divisors (see below), whose sum is σ = 73993680. Its totient is φ = 55495248.

The previous prime is 64744411. The next prime is 64744489. The reversal of 64744463 is 36444746.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64744463 - 2¹² = 64740367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64744663) 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 3 ways as a sum of consecutive naturals, for example, 4624598 + ... + 4624611.

It is an arithmetic number, because the mean of its divisors is an integer number (18498420).

Almost surely, 2^64744463 is an apocalyptic number.

64744463 is a deficient number, since it is larger than the sum of its proper divisors (9249217).

64744463 is an equidigital number, since it uses as much as digits as its factorization.

64744463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9249216.

The product of its digits is 193536, while the sum is 38.

The square root of 64744463 is about 8046.3944099205. The cubic root of 64744463 is about 401.5449894195.

The spelling of 64744463 in words is "sixty-four million, seven hundred forty-four thousand, four hundred sixty-three".