67675257 has 56 divisors (see below), whose sum is σ = 112806344. Its totient is φ = 40310784.

The previous prime is 67675243. The next prime is 67675273. The reversal of 67675257 is 75257676.

67675257 is a `hidden beast` number, since 67 + 67 + 525 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5517801 + 62157456 = 2349^2 + 7884^2 .

It is not a de Polignac number, because 67675257 - 2⁶ = 67675193 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67670257) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 350553 + ... + 350745.

It is an arithmetic number, because the mean of its divisors is an integer number (2014399).

Almost surely, 2^67675257 is an apocalyptic number.

It is an amenable number.

67675257 is a deficient number, since it is larger than the sum of its proper divisors (45131087).

67675257 is a wasteful number, since it uses less digits than its factorization.

67675257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 246 counting only the distinct ones).

The product of its digits is 617400, while the sum is 45.

The square root of 67675257 is about 8226.4972497412. The cubic root of 67675257 is about 407.5147236453.

The spelling of 67675257 in words is "sixty-seven million, six hundred seventy-five thousand, two hundred fifty-seven".