67975808 has 64 divisors (see below), whose sum is σ = 143877120. Its totient is φ = 31933440.

The previous prime is 67975807. The next prime is 67975823. The reversal of 67975808 is 80857976.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (67975801) 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, 146585 + ... + 147047.

It is an arithmetic number, because the mean of its divisors is an integer number (2248080).

Almost surely, 2^67975808 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 67975808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71938560).

67975808 is an abundant number, since it is smaller than the sum of its proper divisors (75901312).

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

67975808 is a wasteful number, since it uses less digits than its factorization.

67975808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 67975808 is about 8244.7442652880. The cubic root of 67975808 is about 408.1171008229.

The spelling of 67975808 in words is "sixty-seven million, nine hundred seventy-five thousand, eight hundred eight".