67242813 has 16 divisors (see below), whose sum is σ = 100964352. Its totient is φ = 39438000.

The previous prime is 67242811. The next prime is 67242827. The reversal of 67242813 is 31824276.

It is not a de Polignac number, because 67242813 - 2¹ = 67242811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67242811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31843 + ... + 33888.

It is an arithmetic number, because the mean of its divisors is an integer number (6310272).

Almost surely, 2^67242813 is an apocalyptic number.

It is an amenable number.

67242813 is a deficient number, since it is larger than the sum of its proper divisors (33721539).

67242813 is a wasteful number, since it uses less digits than its factorization.

67242813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65776.

The product of its digits is 16128, while the sum is 33.

The square root of 67242813 is about 8200.1715225963. The cubic root of 67242813 is about 406.6448636374.

The spelling of 67242813 in words is "sixty-seven million, two hundred forty-two thousand, eight hundred thirteen".