67986253 has 4 divisors (see below), whose sum is σ = 68239260. Its totient is φ = 67733248.

The previous prime is 67986221. The next prime is 67986257. The reversal of 67986253 is 35268976.

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 3697929 + 64288324 = 1923^2 + 8018^2 .

It is a cyclic number.

It is not a de Polignac number, because 67986253 - 2⁵ = 67986221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67986257) 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, 126100 + ... + 126637.

It is an arithmetic number, because the mean of its divisors is an integer number (17059815).

Almost surely, 2^67986253 is an apocalyptic number.

It is an amenable number.

67986253 is a deficient number, since it is larger than the sum of its proper divisors (253007).

67986253 is a wasteful number, since it uses less digits than its factorization.

67986253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253006.

The product of its digits is 544320, while the sum is 46.

The square root of 67986253 is about 8245.3776747945. The cubic root of 67986253 is about 408.1380031848.

The spelling of 67986253 in words is "sixty-seven million, nine hundred eighty-six thousand, two hundred fifty-three".