67622705 has 4 divisors (see below), whose sum is σ = 81147252. Its totient is φ = 54098160.

The previous prime is 67622701. The next prime is 67622773. The reversal of 67622705 is 50722676.

It is a happy number.

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 27793984 + 39828721 = 5272^2 + 6311^2 .

It is not a de Polignac number, because 67622705 - 2² = 67622701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67622701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6762266 + ... + 6762275.

It is an arithmetic number, because the mean of its divisors is an integer number (20286813).

Almost surely, 2^67622705 is an apocalyptic number.

It is an amenable number.

67622705 is a deficient number, since it is larger than the sum of its proper divisors (13524547).

67622705 is a wasteful number, since it uses less digits than its factorization.

67622705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13524546.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 67622705 is about 8223.3025604072. The cubic root of 67622705 is about 407.4092135942.

The spelling of 67622705 in words is "sixty-seven million, six hundred twenty-two thousand, seven hundred five".