64463743 has 4 divisors (see below), whose sum is σ = 65835360. Its totient is φ = 63092128.

The previous prime is 64463701. The next prime is 64463747. The reversal of 64463743 is 34736446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64463743 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 (64463747) 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 3 ways as a sum of consecutive naturals, for example, 685738 + ... + 685831.

It is an arithmetic number, because the mean of its divisors is an integer number (16458840).

Almost surely, 2^64463743 is an apocalyptic number.

64463743 is a deficient number, since it is larger than the sum of its proper divisors (1371617).

64463743 is a wasteful number, since it uses less digits than its factorization.

64463743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371616.

The product of its digits is 145152, while the sum is 37.

The square root of 64463743 is about 8028.9316225759. The cubic root of 64463743 is about 400.9638070746.

It can be divided in two parts, 644637 and 43, that added together give a triangular number (644680 = T₁₁₃₅).

The spelling of 64463743 in words is "sixty-four million, four hundred sixty-three thousand, seven hundred forty-three".