67990608 has 120 divisors (see below), whose sum is σ = 223461888. Its totient is φ = 18890496.

The previous prime is 67990579. The next prime is 67990613. The reversal of 67990608 is 80609976.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36385 + ... + 38207.

Almost surely, 2^67990608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67990608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111730944).

67990608 is an abundant number, since it is smaller than the sum of its proper divisors (155471280).

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

67990608 is a wasteful number, since it uses less digits than its factorization.

67990608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1872 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 67990608 is about 8245.6417579228. The cubic root of 67990608 is about 408.1467177066.

The spelling of 67990608 in words is "sixty-seven million, nine hundred ninety thousand, six hundred eight".