67641275 has 24 divisors (see below), whose sum is σ = 94264800. Its totient is φ = 47773440.

The previous prime is 67641271. The next prime is 67641281. The reversal of 67641275 is 57214676.

It is not a de Polignac number, because 67641275 - 2² = 67641271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67641271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2951 + ... + 11999.

It is an arithmetic number, because the mean of its divisors is an integer number (3927700).

Almost surely, 2^67641275 is an apocalyptic number.

67641275 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

67641275 is a deficient number, since it is larger than the sum of its proper divisors (26623525).

67641275 is a wasteful number, since it uses less digits than its factorization.

67641275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9095 (or 9090 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 67641275 is about 8224.4315913016. The cubic root of 67641275 is about 407.4465033214.

The spelling of 67641275 in words is "sixty-seven million, six hundred forty-one thousand, two hundred seventy-five".