622166143 has 4 divisors (see below), whose sum is σ = 622266760. Its totient is φ = 622065528.

The previous prime is 622166131. The next prime is 622166147. The reversal of 622166143 is 341661226.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 622166143 - 2⁹ = 622165631 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 (622166147) 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, 40380 + ... + 53617.

It is an arithmetic number, because the mean of its divisors is an integer number (155566690).

Almost surely, 2^622166143 is an apocalyptic number.

622166143 is a deficient number, since it is larger than the sum of its proper divisors (100617).

622166143 is an equidigital number, since it uses as much as digits as its factorization.

622166143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100616.

The product of its digits is 10368, while the sum is 31.

The square root of 622166143 is about 24943.2584679709. The cubic root of 622166143 is about 853.6937947389.

The spelling of 622166143 in words is "six hundred twenty-two million, one hundred sixty-six thousand, one hundred forty-three".