622611161 has 8 divisors (see below), whose sum is σ = 648595200. Its totient is φ = 596995920.

The previous prime is 622611139. The next prime is 622611169. The reversal of 622611161 is 161116226.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622611161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 622611161.

It is not an unprimeable number, because it can be changed into a prime (622611169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88751 + ... + 95508.

It is an arithmetic number, because the mean of its divisors is an integer number (81074400).

Almost surely, 2^622611161 is an apocalyptic number.

It is an amenable number.

622611161 is a deficient number, since it is larger than the sum of its proper divisors (25984039).

622611161 is a wasteful number, since it uses less digits than its factorization.

622611161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184399.

The product of its digits is 864, while the sum is 26.

The square root of 622611161 is about 24952.1774801319. The cubic root of 622611161 is about 853.8972873086.

Adding to 622611161 its reverse (161116226), we get a palindrome (783727387).

The spelling of 622611161 in words is "six hundred twenty-two million, six hundred eleven thousand, one hundred sixty-one".