67297998 has 16 divisors (see below), whose sum is σ = 135058896. Its totient is φ = 22355520.

The previous prime is 67297991. The next prime is 67298059. The reversal of 67297998 is 89979276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67297991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17383 + ... + 20898.

It is an arithmetic number, because the mean of its divisors is an integer number (8441181).

Almost surely, 2^67297998 is an apocalyptic number.

67297998 is an abundant number, since it is smaller than the sum of its proper divisors (67760898).

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

67297998 is a wasteful number, since it uses less digits than its factorization.

67297998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38579.

The product of its digits is 3429216, while the sum is 57.

The square root of 67297998 is about 8203.5357011474. The cubic root of 67297998 is about 406.7560753278.

The spelling of 67297998 in words is "sixty-seven million, two hundred ninety-seven thousand, nine hundred ninety-eight".