67989253 has 4 divisors (see below), whose sum is σ = 70333740. Its totient is φ = 65644768.

The previous prime is 67989223. The next prime is 67989263. The reversal of 67989253 is 35298976.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32741284 + 35247969 = 5722^2 + 5937^2 .

It is a cyclic number.

It is not a de Polignac number, because 67989253 - 2⁵ = 67989221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67989197 and 67989206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67989223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172200 + ... + 1172257.

It is an arithmetic number, because the mean of its divisors is an integer number (17583435).

Almost surely, 2^67989253 is an apocalyptic number.

It is an amenable number.

67989253 is a deficient number, since it is larger than the sum of its proper divisors (2344487).

67989253 is a wasteful number, since it uses less digits than its factorization.

67989253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344486.

The product of its digits is 816480, while the sum is 49.

The square root of 67989253 is about 8245.5595928960. The cubic root of 67989253 is about 408.1440063395.

The spelling of 67989253 in words is "sixty-seven million, nine hundred eighty-nine thousand, two hundred fifty-three".