67727434 has 4 divisors (see below), whose sum is σ = 101591154. Its totient is φ = 33863716.

The previous prime is 67727431. The next prime is 67727459. The reversal of 67727434 is 43472776.

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

It can be written as a sum of positive squares in only one way, i.e., 66830625 + 896809 = 8175^2 + 947^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (67727431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16931857 + ... + 16931860.

Almost surely, 2^67727434 is an apocalyptic number.

67727434 is a deficient number, since it is larger than the sum of its proper divisors (33863720).

67727434 is a wasteful number, since it uses less digits than its factorization.

67727434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33863719.

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

The square root of 67727434 is about 8229.6679155358. The cubic root of 67727434 is about 407.6194267747.

The spelling of 67727434 in words is "sixty-seven million, seven hundred twenty-seven thousand, four hundred thirty-four".