67407270691 has 4 divisors (see below), whose sum is σ = 70955021800. Its totient is φ = 63859519584.

The previous prime is 67407270659. The next prime is 67407270701. The reversal of 67407270691 is 19607270476.

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 67407270691 - 2⁵ = 67407270659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67407220691) 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, 1773875526 + ... + 1773875563.

It is an arithmetic number, because the mean of its divisors is an integer number (17738755450).

Almost surely, 2^67407270691 is an apocalyptic number.

67407270691 is a deficient number, since it is larger than the sum of its proper divisors (3547751109).

67407270691 is a wasteful number, since it uses less digits than its factorization.

67407270691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547751108.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 67407270691 in words is "sixty-seven billion, four hundred seven million, two hundred seventy thousand, six hundred ninety-one".