67680261 has 36 divisors (see below), whose sum is σ = 113145760. Its totient is φ = 38847600.

The previous prime is 67680227. The next prime is 67680269. The reversal of 67680261 is 16208676.

It is a happy number.

It is not a de Polignac number, because 67680261 - 2⁷ = 67680133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67680269) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19056 + ... + 22326.

Almost surely, 2^67680261 is an apocalyptic number.

It is an amenable number.

67680261 is a deficient number, since it is larger than the sum of its proper divisors (45465499).

67680261 is a wasteful number, since it uses less digits than its factorization.

67680261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318 (or 3304 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 67680261 is about 8226.8013832838. The cubic root of 67680261 is about 407.5247674610.

The spelling of 67680261 in words is "sixty-seven million, six hundred eighty thousand, two hundred sixty-one".