67813438 has 16 divisors (see below), whose sum is σ = 126820224. Its totient is φ = 26420760.

The previous prime is 67813409. The next prime is 67813439. The reversal of 67813438 is 83431876.

It is a self number, because there is not a number n which added to its sum of digits gives 67813438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67813439) 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, 220020 + ... + 220327.

It is an arithmetic number, because the mean of its divisors is an integer number (7926264).

Almost surely, 2^67813438 is an apocalyptic number.

67813438 is a deficient number, since it is larger than the sum of its proper divisors (59006786).

67813438 is a wasteful number, since it uses less digits than its factorization.

67813438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440367.

The product of its digits is 96768, while the sum is 40.

The square root of 67813438 is about 8234.8914989816. The cubic root of 67813438 is about 407.7918929405.

The spelling of 67813438 in words is "sixty-seven million, eight hundred thirteen thousand, four hundred thirty-eight".