67656341 has 4 divisors (see below), whose sum is σ = 67675212. Its totient is φ = 67637472.

The previous prime is 67656331. The next prime is 67656383. The reversal of 67656341 is 14365676.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22363441 + 45292900 = 4729^2 + 6730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67656341 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67656295 and 67656304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67656331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216 + ... + 11841.

It is an arithmetic number, because the mean of its divisors is an integer number (16918803).

Almost surely, 2^67656341 is an apocalyptic number.

It is an amenable number.

67656341 is a deficient number, since it is larger than the sum of its proper divisors (18871).

67656341 is a wasteful number, since it uses less digits than its factorization.

67656341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18870.

The product of its digits is 90720, while the sum is 38.

The square root of 67656341 is about 8225.3474698641. The cubic root of 67656341 is about 407.4767517820.

The spelling of 67656341 in words is "sixty-seven million, six hundred fifty-six thousand, three hundred forty-one".