67256743 has 4 divisors (see below), whose sum is σ = 71213040. Its totient is φ = 63300448.

The previous prime is 67256741. The next prime is 67256747. The reversal of 67256743 is 34765276.

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

It is a cyclic number.

It is not a de Polignac number, because 67256743 - 2¹ = 67256741 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67256696 and 67256705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67256741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1978123 + ... + 1978156.

It is an arithmetic number, because the mean of its divisors is an integer number (17803260).

Almost surely, 2^67256743 is an apocalyptic number.

67256743 is a deficient number, since it is larger than the sum of its proper divisors (3956297).

67256743 is a wasteful number, since it uses less digits than its factorization.

67256743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3956296.

The product of its digits is 211680, while the sum is 40.

The square root of 67256743 is about 8201.0208510892. The cubic root of 67256743 is about 406.6729418393.

The spelling of 67256743 in words is "sixty-seven million, two hundred fifty-six thousand, seven hundred forty-three".