67275257 has 16 divisors (see below), whose sum is σ = 81164160. Its totient is φ = 54473472.

The previous prime is 67275227. The next prime is 67275259. The reversal of 67275257 is 75257276.

It is a cyclic number.

It is not a de Polignac number, because 67275257 - 2¹² = 67271161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67275259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78443 + ... + 79295.

It is an arithmetic number, because the mean of its divisors is an integer number (5072760).

Almost surely, 2^67275257 is an apocalyptic number.

It is an amenable number.

67275257 is a deficient number, since it is larger than the sum of its proper divisors (13888903).

67275257 is a wasteful number, since it uses less digits than its factorization.

67275257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472.

The product of its digits is 205800, while the sum is 41.

The square root of 67275257 is about 8202.1495353352. The cubic root of 67275257 is about 406.7102538458.

The spelling of 67275257 in words is "sixty-seven million, two hundred seventy-five thousand, two hundred fifty-seven".