67438066 has 16 divisors (see below), whose sum is σ = 102270168. Its totient is φ = 33350400.

The previous prime is 67438043. The next prime is 67438073. The reversal of 67438066 is 66083476.

It can be written as a sum of positive squares in 4 ways, for example, as 28313041 + 39125025 = 5321^2 + 6255^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86856 + ... + 87628.

Almost surely, 2^67438066 is an apocalyptic number.

67438066 is a deficient number, since it is larger than the sum of its proper divisors (34832102).

67438066 is a wasteful number, since it uses less digits than its factorization.

67438066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 67438066 is about 8212.0683143773. The cubic root of 67438066 is about 407.0380749453.

The spelling of 67438066 in words is "sixty-seven million, four hundred thirty-eight thousand, sixty-six".