67961384 has 32 divisors (see below), whose sum is σ = 132316200. Its totient is φ = 32686080.

The previous prime is 67961363. The next prime is 67961407. The reversal of 67961384 is 48316976.

It can be written as a sum of positive squares in 4 ways, for example, as 67732900 + 228484 = 8230^2 + 478^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105704 + ... + 106344.

Almost surely, 2^67961384 is an apocalyptic number.

It is an amenable number.

67961384 is a deficient number, since it is larger than the sum of its proper divisors (64354816).

67961384 is a wasteful number, since it uses less digits than its factorization.

67961384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133 (or 1129 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 67961384 is about 8243.8694798013. The cubic root of 67961384 is about 408.0882322315.

The spelling of 67961384 in words is "sixty-seven million, nine hundred sixty-one thousand, three hundred eighty-four".