67542671 has 4 divisors (see below), whose sum is σ = 77191632. Its totient is φ = 57893712.

The previous prime is 67542647. The next prime is 67542721. The reversal of 67542671 is 17624576.

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 67542671 - 2¹⁴ = 67526287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67541671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4824470 + ... + 4824483.

It is an arithmetic number, because the mean of its divisors is an integer number (19297908).

Almost surely, 2^67542671 is an apocalyptic number.

67542671 is a deficient number, since it is larger than the sum of its proper divisors (9648961).

67542671 is an equidigital number, since it uses as much as digits as its factorization.

67542671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9648960.

The product of its digits is 70560, while the sum is 38.

The square root of 67542671 is about 8218.4348266565. The cubic root of 67542671 is about 407.2484221304.

The spelling of 67542671 in words is "sixty-seven million, five hundred forty-two thousand, six hundred seventy-one".