67139463 has 8 divisors (see below), whose sum is σ = 91036800. Its totient is φ = 44000888.

The previous prime is 67139411. The next prime is 67139473. The reversal of 67139463 is 36493176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67139463 - 2⁶ = 67139399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67139473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189483 + ... + 189836.

It is an arithmetic number, because the mean of its divisors is an integer number (11379600).

Almost surely, 2^67139463 is an apocalyptic number.

67139463 is a deficient number, since it is larger than the sum of its proper divisors (23897337).

67139463 is a wasteful number, since it uses less digits than its factorization.

67139463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379381.

The product of its digits is 81648, while the sum is 39.

The square root of 67139463 is about 8193.8674019049. The cubic root of 67139463 is about 406.4364235359.

The spelling of 67139463 in words is "sixty-seven million, one hundred thirty-nine thousand, four hundred sixty-three".