64345743 has 72 divisors (see below), whose sum is σ = 122164224. Its totient is φ = 31885920.

The previous prime is 64345733. The next prime is 64345747. The reversal of 64345743 is 34754346.

It is a happy number.

64345743 is a `hidden beast` number, since 643 + 4 + 5 + 7 + 4 + 3 = 666.

It is not a de Polignac number, because 64345743 - 2⁴ = 64345727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64345698 and 64345707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64345747) 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 71 ways as a sum of consecutive naturals, for example, 175146 + ... + 175512.

Almost surely, 2^64345743 is an apocalyptic number.

64345743 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

64345743 is a deficient number, since it is larger than the sum of its proper divisors (57818481).

64345743 is a wasteful number, since it uses less digits than its factorization.

64345743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 411 counting only the distinct ones).

The product of its digits is 120960, while the sum is 36.

The square root of 64345743 is about 8021.5798319284. The cubic root of 64345743 is about 400.7190047228.

The spelling of 64345743 in words is "sixty-four million, three hundred forty-five thousand, seven hundred forty-three".