67117072 has 20 divisors (see below), whose sum is σ = 141861456. Its totient is φ = 30507680.

The previous prime is 67117031. The next prime is 67117073. The reversal of 67117072 is 27071176.

It is not an unprimeable number, because it can be changed into a prime (67117073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190498 + ... + 190849.

Almost surely, 2^67117072 is an apocalyptic number.

It is an amenable number.

67117072 is an abundant number, since it is smaller than the sum of its proper divisors (74744384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67117072 is a wasteful number, since it uses less digits than its factorization.

67117072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381366 (or 381360 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 31.

The square root of 67117072 is about 8192.5009612450. The cubic root of 67117072 is about 406.3912363518.

The spelling of 67117072 in words is "sixty-seven million, one hundred seventeen thousand, seventy-two".