67743427 has 4 divisors (see below), whose sum is σ = 68414256. Its totient is φ = 67072600.

The previous prime is 67743421. The next prime is 67743469. The reversal of 67743427 is 72434776.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67743427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67743427.

It is not an unprimeable number, because it can be changed into a prime (67743421) 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, 335263 + ... + 335464.

It is an arithmetic number, because the mean of its divisors is an integer number (17103564).

Almost surely, 2^67743427 is an apocalyptic number.

67743427 is a deficient number, since it is larger than the sum of its proper divisors (670829).

67743427 is a wasteful number, since it uses less digits than its factorization.

67743427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670828.

The product of its digits is 197568, while the sum is 40.

The square root of 67743427 is about 8230.6395255776. The cubic root of 67743427 is about 407.6515090199.

It can be divided in two parts, 6774 and 3427, that added together give a palindrome (10201).

The spelling of 67743427 in words is "sixty-seven million, seven hundred forty-three thousand, four hundred twenty-seven".