67898 has 8 divisors (see below), whose sum is σ = 107892. Its totient is φ = 31936.

The previous prime is 67891. The next prime is 67901. The reversal of 67898 is 89876.

67898 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 66049 + 1849 = 257^2 + 43^2 .

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

It is a super-2 number, since 2×67898² = 9220276808, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁵ + 7² + 8³ + 9⁵ + 8³ .

It is an alternating number because its digits alternate between even and odd.

Its product of digits (24192) is a multiple of the sum of its prime divisors (2016).

It is not an unprimeable number, because it can be changed into a prime (67891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965 + ... + 1032.

2⁶⁷⁸⁹⁸ is an apocalyptic number.

67898 is a deficient number, since it is larger than the sum of its proper divisors (39994).

67898 is a wasteful number, since it uses less digits than its factorization.

67898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016.

The product of its digits is 24192, while the sum is 38.

The square root of 67898 is about 260.5724467399. The cubic root of 67898 is about 40.7961325310.

The spelling of 67898 in words is "sixty-seven thousand, eight hundred ninety-eight".