67674381 has 4 divisors (see below), whose sum is σ = 90232512. Its totient is φ = 45116252.

The previous prime is 67674377. The next prime is 67674413. The reversal of 67674381 is 18347676.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67674381 - 2² = 67674377 is a prime.

It is a super-2 number, since 2×67674381² = 9159643687466322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67674311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11279061 + ... + 11279066.

It is an arithmetic number, because the mean of its divisors is an integer number (22558128).

Almost surely, 2^67674381 is an apocalyptic number.

It is an amenable number.

67674381 is a deficient number, since it is larger than the sum of its proper divisors (22558131).

67674381 is a wasteful number, since it uses less digits than its factorization.

67674381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22558130.

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

The square root of 67674381 is about 8226.4440069814. Note that the first 3 decimals coincide. The cubic root of 67674381 is about 407.5129653245.

It can be divided in two parts, 676 and 74381, that added together give a palindrome (75057).

The spelling of 67674381 in words is "sixty-seven million, six hundred seventy-four thousand, three hundred eighty-one".