67531613 has 4 divisors (see below), whose sum is σ = 67735968. Its totient is φ = 67327260.

The previous prime is 67531603. The next prime is 67531619. The reversal of 67531613 is 31613576.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67531613 - 2²⁶ = 422749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67531613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67531619) 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, 101681 + ... + 102342.

It is an arithmetic number, because the mean of its divisors is an integer number (16933992).

Almost surely, 2^67531613 is an apocalyptic number.

It is an amenable number.

67531613 is a deficient number, since it is larger than the sum of its proper divisors (204355).

67531613 is a wasteful number, since it uses less digits than its factorization.

67531613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204354.

The product of its digits is 11340, while the sum is 32.

The square root of 67531613 is about 8217.7620432816. The cubic root of 67531613 is about 407.2261961865.

The spelling of 67531613 in words is "sixty-seven million, five hundred thirty-one thousand, six hundred thirteen".