67680577 has 4 divisors (see below), whose sum is σ = 70014420. Its totient is φ = 65346736.

The previous prime is 67680551. The next prime is 67680583. The reversal of 67680577 is 77508676.

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 29931841 + 37748736 = 5471^2 + 6144^2 .

It is a cyclic number.

It is not a de Polignac number, because 67680577 - 2⁷ = 67680449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67680377) 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, 1166878 + ... + 1166935.

It is an arithmetic number, because the mean of its divisors is an integer number (17503605).

Almost surely, 2^67680577 is an apocalyptic number.

It is an amenable number.

67680577 is a deficient number, since it is larger than the sum of its proper divisors (2333843).

67680577 is a wasteful number, since it uses less digits than its factorization.

67680577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333842.

The product of its (nonzero) digits is 493920, while the sum is 46.

The square root of 67680577 is about 8226.8205887815. The cubic root of 67680577 is about 407.5254017061.

The spelling of 67680577 in words is "sixty-seven million, six hundred eighty thousand, five hundred seventy-seven".