67128243 has 64 divisors (see below), whose sum is σ = 116659200. Its totient is φ = 33384960.

The previous prime is 67128239. The next prime is 67128247. The reversal of 67128243 is 34282176.

It is an interprime number because it is at equal distance from previous prime (67128239) and next prime (67128247).

It is not a de Polignac number, because 67128243 - 2² = 67128239 is a prime.

Its product of digits (16128) is a multiple of the sum of its prime divisors (252).

It is not an unprimeable number, because it can be changed into a prime (67128247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 482868 + ... + 483006.

It is an arithmetic number, because the mean of its divisors is an integer number (1822800).

Almost surely, 2^67128243 is an apocalyptic number.

67128243 is a deficient number, since it is larger than the sum of its proper divisors (49530957).

67128243 is a wasteful number, since it uses less digits than its factorization.

67128243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 16128, while the sum is 33.

The square root of 67128243 is about 8193.1827149161. The cubic root of 67128243 is about 406.4137817565.

The spelling of 67128243 in words is "sixty-seven million, one hundred twenty-eight thousand, two hundred forty-three".