67967947 has 4 divisors (see below), whose sum is σ = 68272960. Its totient is φ = 67662936.

The previous prime is 67967929. The next prime is 67967951. The reversal of 67967947 is 74976976.

It is a happy number.

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-67967947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67967917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152172 + ... + 152617.

It is an arithmetic number, because the mean of its divisors is an integer number (17068240).

Almost surely, 2^67967947 is an apocalyptic number.

67967947 is a deficient number, since it is larger than the sum of its proper divisors (305013).

67967947 is a wasteful number, since it uses less digits than its factorization.

67967947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305012.

The product of its digits is 4000752, while the sum is 55.

The square root of 67967947 is about 8244.2675235584. The cubic root of 67967947 is about 408.1013681071.

It can be divided in two parts, 679679 and 47, that multiplied together give a palindrome (31944913).

The spelling of 67967947 in words is "sixty-seven million, nine hundred sixty-seven thousand, nine hundred forty-seven".