67612861 has 8 divisors (see below), whose sum is σ = 68774400. Its totient is φ = 66459120.

The previous prime is 67612843. The next prime is 67612873. The reversal of 67612861 is 16821676.

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 67612861 - 2¹¹ = 67610813 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 67612861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67612841) 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, 17091 + ... + 20671.

It is an arithmetic number, because the mean of its divisors is an integer number (8596800).

Almost surely, 2^67612861 is an apocalyptic number.

It is an amenable number.

67612861 is a deficient number, since it is larger than the sum of its proper divisors (1161539).

67612861 is a wasteful number, since it uses less digits than its factorization.

67612861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899.

The product of its digits is 24192, while the sum is 37.

The square root of 67612861 is about 8222.7039956452. The cubic root of 67612861 is about 407.3894434547.

The spelling of 67612861 in words is "sixty-seven million, six hundred twelve thousand, eight hundred sixty-one".