67040738 has 4 divisors (see below), whose sum is σ = 100561110. Its totient is φ = 33520368.

The previous prime is 67040731. The next prime is 67040749. The reversal of 67040738 is 83704076.

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., 38278969 + 28761769 = 6187^2 + 5363^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67040698 and 67040707.

It is not an unprimeable number, because it can be changed into a prime (67040731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16760183 + ... + 16760186.

Almost surely, 2^67040738 is an apocalyptic number.

67040738 is a deficient number, since it is larger than the sum of its proper divisors (33520372).

67040738 is a wasteful number, since it uses less digits than its factorization.

67040738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33520371.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 67040738 is about 8187.8408631336. The cubic root of 67040738 is about 406.2371114491.

The spelling of 67040738 in words is "sixty-seven million, forty thousand, seven hundred thirty-eight".