67655145 has 8 divisors (see below), whose sum is σ = 108248256. Its totient is φ = 36082736.

The previous prime is 67655141. The next prime is 67655149. The reversal of 67655145 is 54155676.

It is an interprime number because it is at equal distance from previous prime (67655141) and next prime (67655149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67655145 - 2² = 67655141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67655141) 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 7 ways as a sum of consecutive naturals, for example, 2255157 + ... + 2255186.

It is an arithmetic number, because the mean of its divisors is an integer number (13531032).

Almost surely, 2^67655145 is an apocalyptic number.

It is an amenable number.

67655145 is a deficient number, since it is larger than the sum of its proper divisors (40593111).

67655145 is a wasteful number, since it uses less digits than its factorization.

67655145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510351.

The product of its digits is 126000, while the sum is 39.

The square root of 67655145 is about 8225.2747674470. The cubic root of 67655145 is about 407.4743507009.

The spelling of 67655145 in words is "sixty-seven million, six hundred fifty-five thousand, one hundred forty-five".