67671438 has 16 divisors (see below), whose sum is σ = 137197776. Its totient is φ = 22248000.

The previous prime is 67671437. The next prime is 67671469. The reversal of 67671438 is 83417676.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 67671438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67671431) 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, 76813 + ... + 77688.

It is an arithmetic number, because the mean of its divisors is an integer number (8574861).

Almost surely, 2^67671438 is an apocalyptic number.

67671438 is an abundant number, since it is smaller than the sum of its proper divisors (69526338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67671438 is a wasteful number, since it uses less digits than its factorization.

67671438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154579.

The product of its digits is 169344, while the sum is 42.

The square root of 67671438 is about 8226.2651306653. The cubic root of 67671438 is about 407.5070579780.

The spelling of 67671438 in words is "sixty-seven million, six hundred seventy-one thousand, four hundred thirty-eight".