68452213 has 4 divisors (see below), whose sum is σ = 69612480. Its totient is φ = 67291948.

The previous prime is 68452201. The next prime is 68452243. The reversal of 68452213 is 31225486.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31225486 = 2 ⋅15612743.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68452213 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68452243) 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, 580045 + ... + 580162.

It is an arithmetic number, because the mean of its divisors is an integer number (17403120).

Almost surely, 2^68452213 is an apocalyptic number.

It is an amenable number.

68452213 is a deficient number, since it is larger than the sum of its proper divisors (1160267).

68452213 is a wasteful number, since it uses less digits than its factorization.

68452213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160266.

The product of its digits is 11520, while the sum is 31.

The square root of 68452213 is about 8273.5852567070. The cubic root of 68452213 is about 409.0683047787.

Adding to 68452213 its reverse (31225486), we get a palindrome (99677699).

The spelling of 68452213 in words is "sixty-eight million, four hundred fifty-two thousand, two hundred thirteen".