67973661 has 48 divisors (see below), whose sum is σ = 117936000. Its totient is φ = 38320128.

The previous prime is 67973627. The next prime is 67973663. The reversal of 67973661 is 16637976.

It is not a de Polignac number, because 67973661 - 2¹¹ = 67971613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67973663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 151165 + ... + 151613.

It is an arithmetic number, because the mean of its divisors is an integer number (2457000).

Almost surely, 2^67973661 is an apocalyptic number.

It is an amenable number.

67973661 is a deficient number, since it is larger than the sum of its proper divisors (49962339).

67973661 is an equidigital number, since it uses as much as digits as its factorization.

67973661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 548 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 67973661 is about 8244.6140601001. The cubic root of 67973661 is about 408.1128040166.

The spelling of 67973661 in words is "sixty-seven million, nine hundred seventy-three thousand, six hundred sixty-one".