67919904 has 96 divisors (see below), whose sum is σ = 213373440. Its totient is φ = 20894976.

The previous prime is 67919881. The next prime is 67919909. The reversal of 67919904 is 40991976.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×67919904² = 9226226718738432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67919904.

It is not an unprimeable number, because it can be changed into a prime (67919909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8209 + ... + 14255.

It is an arithmetic number, because the mean of its divisors is an integer number (2222640).

Almost surely, 2^67919904 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 67919904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106686720).

67919904 is an abundant number, since it is smaller than the sum of its proper divisors (145453536).

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

67919904 is a wasteful number, since it uses less digits than its factorization.

67919904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6079 (or 6065 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 67919904 is about 8241.3532869305. The cubic root of 67919904 is about 408.0051902454.

The spelling of 67919904 in words is "sixty-seven million, nine hundred nineteen thousand, nine hundred four".