67998258 has 64 divisors (see below), whose sum is σ = 160807680. Its totient is φ = 21250944.

The previous prime is 67998257. The next prime is 67998263. The reversal of 67998258 is 85289976.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (2177280) is a multiple of the sum of its prime factors (1120).

It is not an unprimeable number, because it can be changed into a prime (67998257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65310 + ... + 66342.

It is an arithmetic number, because the mean of its divisors is an integer number (2512620).

Almost surely, 2^67998258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67998258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80403840).

67998258 is an abundant number, since it is smaller than the sum of its proper divisors (92809422).

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

67998258 is a wasteful number, since it uses less digits than its factorization.

67998258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1114 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 67998258 is about 8246.1056262941. The cubic root of 67998258 is about 408.1620247486.

The spelling of 67998258 in words is "sixty-seven million, nine hundred ninety-eight thousand, two hundred fifty-eight".