67622213 has 4 divisors (see below), whose sum is σ = 67976448. Its totient is φ = 67267980.

The previous prime is 67622207. The next prime is 67622239. The reversal of 67622213 is 31222676.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67622213 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 (67622263) 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, 176831 + ... + 177212.

It is an arithmetic number, because the mean of its divisors is an integer number (16994112).

Almost surely, 2^67622213 is an apocalyptic number.

It is an amenable number.

67622213 is a deficient number, since it is larger than the sum of its proper divisors (354235).

67622213 is a wasteful number, since it uses less digits than its factorization.

67622213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354234.

The product of its digits is 6048, while the sum is 29.

The square root of 67622213 is about 8223.2726453645. The cubic root of 67622213 is about 407.4082255344.

Adding to 67622213 its reverse (31222676), we get a palindrome (98844889).

The spelling of 67622213 in words is "sixty-seven million, six hundred twenty-two thousand, two hundred thirteen".