67989455 has 8 divisors (see below), whose sum is σ = 81635904. Its totient is φ = 54359200.

The previous prime is 67989421. The next prime is 67989457. The reversal of 67989455 is 55498976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67989455 - 2⁸ = 67989199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67989397 and 67989406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67989457) 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, 9050 + ... + 14760.

It is an arithmetic number, because the mean of its divisors is an integer number (10204488).

Almost surely, 2^67989455 is an apocalyptic number.

67989455 is a deficient number, since it is larger than the sum of its proper divisors (13646449).

67989455 is a wasteful number, since it uses less digits than its factorization.

67989455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8097.

The product of its digits is 2721600, while the sum is 53.

The square root of 67989455 is about 8245.5718419040. The cubic root of 67989455 is about 408.1444105456.

The spelling of 67989455 in words is "sixty-seven million, nine hundred eighty-nine thousand, four hundred fifty-five".