67040438 has 4 divisors (see below), whose sum is σ = 100560660. Its totient is φ = 33520218.

The previous prime is 67040399. The next prime is 67040443. The reversal of 67040438 is 83404076.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16760108 + ... + 16760111.

It is an arithmetic number, because the mean of its divisors is an integer number (25140165).

Almost surely, 2^67040438 is an apocalyptic number.

67040438 is a deficient number, since it is larger than the sum of its proper divisors (33520222).

67040438 is a wasteful number, since it uses less digits than its factorization.

67040438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33520221.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 67040438 is about 8187.8225432651. The cubic root of 67040438 is about 406.2365054926.

The spelling of 67040438 in words is "sixty-seven million, forty thousand, four hundred thirty-eight".