67993417 has 4 divisors (see below), whose sum is σ = 68145300. Its totient is φ = 67841536.

The previous prime is 67993397. The next prime is 67993427. The reversal of 67993417 is 71439976.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27237961 + 40755456 = 5219^2 + 6384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67993417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67993427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75268 + ... + 76165.

It is an arithmetic number, because the mean of its divisors is an integer number (17036325).

Almost surely, 2^67993417 is an apocalyptic number.

It is an amenable number.

67993417 is a deficient number, since it is larger than the sum of its proper divisors (151883).

67993417 is a wasteful number, since it uses less digits than its factorization.

67993417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151882.

The product of its digits is 285768, while the sum is 46.

The square root of 67993417 is about 8245.8120885696. The cubic root of 67993417 is about 408.1523384257.

The spelling of 67993417 in words is "sixty-seven million, nine hundred ninety-three thousand, four hundred seventeen".