67993117 has 8 divisors (see below), whose sum is σ = 69895224. Its totient is φ = 66114048.

The previous prime is 67993111. The next prime is 67993147. The reversal of 67993117 is 71139976.

It can be written as a sum of positive squares in 4 ways, for example, as 276676 + 67716441 = 526^2 + 8229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67993117 - 2³ = 67993109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67993111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313 + ... + 11665.

It is an arithmetic number, because the mean of its divisors is an integer number (8736903).

Almost surely, 2^67993117 is an apocalyptic number.

It is an amenable number.

67993117 is a deficient number, since it is larger than the sum of its proper divisors (1902107).

67993117 is a wasteful number, since it uses less digits than its factorization.

67993117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11519.

The product of its digits is 71442, while the sum is 43.

The square root of 67993117 is about 8245.7938974971. The cubic root of 67993117 is about 408.1517381427.

The spelling of 67993117 in words is "sixty-seven million, nine hundred ninety-three thousand, one hundred seventeen".