67872493 has 4 divisors (see below), whose sum is σ = 73093468. Its totient is φ = 62651520.

The previous prime is 67872491. The next prime is 67872509. The reversal of 67872493 is 39427876.

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 5098564 + 62773929 = 2258^2 + 7923^2 .

It is a cyclic number.

It is not a de Polignac number, because 67872493 - 2¹ = 67872491 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 (67872491) 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, 2610468 + ... + 2610493.

It is an arithmetic number, because the mean of its divisors is an integer number (18273367).

Almost surely, 2^67872493 is an apocalyptic number.

It is an amenable number.

67872493 is a deficient number, since it is larger than the sum of its proper divisors (5220975).

67872493 is a wasteful number, since it uses less digits than its factorization.

67872493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220974.

The product of its digits is 508032, while the sum is 46.

The square root of 67872493 is about 8238.4763761268. The cubic root of 67872493 is about 407.9102331187.

The spelling of 67872493 in words is "sixty-seven million, eight hundred seventy-two thousand, four hundred ninety-three".