64434663 has 8 divisors (see below), whose sum is σ = 95458800. Its totient is φ = 42956424.

The previous prime is 64434659. The next prime is 64434677. The reversal of 64434663 is 36643446.

64434663 is a `hidden beast` number, since 644 + 3 + 4 + 6 + 6 + 3 = 666.

It is not a de Polignac number, because 64434663 - 2² = 64434659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64434613) 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 7 ways as a sum of consecutive naturals, for example, 1193208 + ... + 1193261.

It is an arithmetic number, because the mean of its divisors is an integer number (11932350).

Almost surely, 2^64434663 is an apocalyptic number.

64434663 is a deficient number, since it is larger than the sum of its proper divisors (31024137).

64434663 is a wasteful number, since it uses less digits than its factorization.

64434663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386478 (or 2386472 counting only the distinct ones).

The product of its digits is 124416, while the sum is 36.

The square root of 64434663 is about 8027.1204675151. The cubic root of 64434663 is about 400.9035055743.

The spelling of 64434663 in words is "sixty-four million, four hundred thirty-four thousand, six hundred sixty-three".