67257065 has 4 divisors (see below), whose sum is σ = 80708484. Its totient is φ = 53805648.

The previous prime is 67257019. The next prime is 67257067. The reversal of 67257065 is 56075276.

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 12334144 + 54922921 = 3512^2 + 7411^2 .

It is a cyclic number.

It is not a de Polignac number, because 67257065 - 2¹⁴ = 67240681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67257067) 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, 6725702 + ... + 6725711.

It is an arithmetic number, because the mean of its divisors is an integer number (20177121).

Almost surely, 2^67257065 is an apocalyptic number.

It is an amenable number.

67257065 is a deficient number, since it is larger than the sum of its proper divisors (13451419).

67257065 is a wasteful number, since it uses less digits than its factorization.

67257065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13451418.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 67257065 is about 8201.0404827680. The cubic root of 67257065 is about 406.6735908373.

The spelling of 67257065 in words is "sixty-seven million, two hundred fifty-seven thousand, sixty-five".