67284993 has 8 divisors (see below), whose sum is σ = 89938656. Its totient is φ = 44744000.

The previous prime is 67284991. The next prime is 67285021. The reversal of 67284993 is 39948276.

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 67284993 - 2¹ = 67284991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67284991) 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, 26763 + ... + 29168.

It is an arithmetic number, because the mean of its divisors is an integer number (11242332).

Almost surely, 2^67284993 is an apocalyptic number.

It is an amenable number.

67284993 is a deficient number, since it is larger than the sum of its proper divisors (22653663).

67284993 is a wasteful number, since it uses less digits than its factorization.

67284993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56335.

The product of its digits is 653184, while the sum is 48.

The square root of 67284993 is about 8202.7430168207. The cubic root of 67284993 is about 406.7298724506.

The spelling of 67284993 in words is "sixty-seven million, two hundred eighty-four thousand, nine hundred ninety-three".