67270257 has 10 divisors (see below), whose sum is σ = 100490258. Its totient is φ = 44846784.

The previous prime is 67270243. The next prime is 67270283. The reversal of 67270257 is 75207276.

It can be written as a sum of positive squares in only one way, i.e., 67223601 + 46656 = 8199^2 + 216^2 .

It is a de Polignac number, because none of the positive numbers 2^k-67270257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67270237) 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 9 ways as a sum of consecutive naturals, for example, 415168 + ... + 415329.

Almost surely, 2^67270257 is an apocalyptic number.

It is an amenable number.

67270257 is a deficient number, since it is larger than the sum of its proper divisors (33220001).

67270257 is an equidigital number, since it uses as much as digits as its factorization.

67270257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830509 (or 830500 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 67270257 is about 8201.8447315223. The cubic root of 67270257 is about 406.7001778201.

The spelling of 67270257 in words is "sixty-seven million, two hundred seventy thousand, two hundred fifty-seven".