64494463 has 16 divisors (see below), whose sum is σ = 73251360. Its totient is φ = 56246400.

The previous prime is 64494449. The next prime is 64494467. The reversal of 64494463 is 36449446.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 64494463 - 2¹⁷ = 64363391 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 (64494467) 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 15 ways as a sum of consecutive naturals, for example, 57181 + ... + 58297.

It is an arithmetic number, because the mean of its divisors is an integer number (4578210).

Almost surely, 2^64494463 is an apocalyptic number.

64494463 is a deficient number, since it is larger than the sum of its proper divisors (8756897).

64494463 is a wasteful number, since it uses less digits than its factorization.

64494463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338.

The product of its digits is 248832, while the sum is 40.

The square root of 64494463 is about 8030.8444761432. The cubic root of 64494463 is about 401.0274896526.

The spelling of 64494463 in words is "sixty-four million, four hundred ninety-four thousand, four hundred sixty-three".