64416447 has 12 divisors (see below), whose sum is σ = 93309840. Its totient is φ = 42822528.

The previous prime is 64416431. The next prime is 64416467. The reversal of 64416447 is 74461446.

64416447 is a `hidden beast` number, since 6 + 4 + 4 + 1 + 644 + 7 = 666.

It is not a de Polignac number, because 64416447 - 2⁴ = 64416431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64416467) 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 11 ways as a sum of consecutive naturals, for example, 6738 + ... + 13199.

It is an arithmetic number, because the mean of its divisors is an integer number (7775820).

Almost surely, 2^64416447 is an apocalyptic number.

64416447 is a deficient number, since it is larger than the sum of its proper divisors (28893393).

64416447 is a wasteful number, since it uses less digits than its factorization.

64416447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20302 (or 20299 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 64416447 is about 8025.9857338523. The cubic root of 64416447 is about 400.8657228747.

The spelling of 64416447 in words is "sixty-four million, four hundred sixteen thousand, four hundred forty-seven".