67989608 has 8 divisors (see below), whose sum is σ = 127480530. Its totient is φ = 33994800.

The previous prime is 67989599. The next prime is 67989611. The reversal of 67989608 is 80698976.

It can be written as a sum of positive squares in only one way, i.e., 66945124 + 1044484 = 8182^2 + 1022^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 67989608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4249343 + ... + 4249358.

Almost surely, 2^67989608 is an apocalyptic number.

It is an amenable number.

67989608 is a deficient number, since it is larger than the sum of its proper divisors (59490922).

67989608 is a wasteful number, since it uses less digits than its factorization.

67989608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8498707 (or 8498703 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 67989608 is about 8245.5811196058. The cubic root of 67989608 is about 408.1447167012.

The spelling of 67989608 in words is "sixty-seven million, nine hundred eighty-nine thousand, six hundred eight".