67143406 has 16 divisors (see below), whose sum is σ = 109996848. Its totient is φ = 30484800.

The previous prime is 67143389. The next prime is 67143407. The reversal of 67143406 is 60434176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67143407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37426 + ... + 39178.

It is an arithmetic number, because the mean of its divisors is an integer number (6874803).

Almost surely, 2^67143406 is an apocalyptic number.

67143406 is a deficient number, since it is larger than the sum of its proper divisors (42853442).

67143406 is a wasteful number, since it uses less digits than its factorization.

67143406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 67143406 is about 8194.1080051461. The cubic root of 67143406 is about 406.4443798474. Note that the first 3 decimals are identical.

The spelling of 67143406 in words is "sixty-seven million, one hundred forty-three thousand, four hundred six".