67134621 has 4 divisors (see below), whose sum is σ = 89512832. Its totient is φ = 44756412.

The previous prime is 67134611. The next prime is 67134629. The reversal of 67134621 is 12643176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 67134621 - 2¹¹ = 67132573 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 (67134629) 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, 11189101 + ... + 11189106.

It is an arithmetic number, because the mean of its divisors is an integer number (22378208).

Almost surely, 2^67134621 is an apocalyptic number.

It is an amenable number.

67134621 is a deficient number, since it is larger than the sum of its proper divisors (22378211).

67134621 is a wasteful number, since it uses less digits than its factorization.

67134621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22378210.

The product of its digits is 6048, while the sum is 30.

The square root of 67134621 is about 8193.5719317035. The cubic root of 67134621 is about 406.4266527673.

Adding to 67134621 its reverse (12643176), we get a palindrome (79777797).

The spelling of 67134621 in words is "sixty-seven million, one hundred thirty-four thousand, six hundred twenty-one".