67142066 has 4 divisors (see below), whose sum is σ = 100713102. Its totient is φ = 33571032.

The previous prime is 67142057. The next prime is 67142069. The reversal of 67142066 is 66024176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64336441 + 2805625 = 8021^2 + 1675^2 .

It is not an unprimeable number, because it can be changed into a prime (67142069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16785515 + ... + 16785518.

Almost surely, 2^67142066 is an apocalyptic number.

67142066 is a deficient number, since it is larger than the sum of its proper divisors (33571036).

67142066 is a wasteful number, since it uses less digits than its factorization.

67142066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33571035.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 67142066 is about 8194.0262386692. The cubic root of 67142066 is about 406.4416759875.

The spelling of 67142066 in words is "sixty-seven million, one hundred forty-two thousand, sixty-six".