67712843 has 4 divisors (see below), whose sum is σ = 73868568. Its totient is φ = 61557120.

The previous prime is 67712837. The next prime is 67712857. The reversal of 67712843 is 34821776.

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 67712843 - 2¹⁴ = 67696459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67712797 and 67712806.

It is not an unprimeable number, because it can be changed into a prime (67712833) 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, 3077846 + ... + 3077867.

It is an arithmetic number, because the mean of its divisors is an integer number (18467142).

Almost surely, 2^67712843 is an apocalyptic number.

67712843 is a deficient number, since it is larger than the sum of its proper divisors (6155725).

67712843 is a wasteful number, since it uses less digits than its factorization.

67712843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6155724.

The product of its digits is 56448, while the sum is 38.

The square root of 67712843 is about 8228.7813800100. The cubic root of 67712843 is about 407.5901525606.

The spelling of 67712843 in words is "sixty-seven million, seven hundred twelve thousand, eight hundred forty-three".