67613813 has 8 divisors (see below), whose sum is σ = 70739136. Its totient is φ = 64504000.

The previous prime is 67613801. The next prime is 67613827. The reversal of 67613813 is 31831676.

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 67613813 - 2¹⁶ = 67548277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67613893) 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 7 ways as a sum of consecutive naturals, for example, 5558 + ... + 12888.

It is an arithmetic number, because the mean of its divisors is an integer number (8842392).

Almost surely, 2^67613813 is an apocalyptic number.

It is an amenable number.

67613813 is a deficient number, since it is larger than the sum of its proper divisors (3125323).

67613813 is a wasteful number, since it uses less digits than its factorization.

67613813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7755.

The product of its digits is 18144, while the sum is 35.

The square root of 67613813 is about 8222.7618839414. The cubic root of 67613813 is about 407.3913554821.

The spelling of 67613813 in words is "sixty-seven million, six hundred thirteen thousand, eight hundred thirteen".