622216739 has 4 divisors (see below), whose sum is σ = 631503624. Its totient is φ = 612929856.

The previous prime is 622216703. The next prime is 622216747. The reversal of 622216739 is 937612226.

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 622216739 - 2²⁸ = 353781283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622216139) 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, 4643342 + ... + 4643475.

It is an arithmetic number, because the mean of its divisors is an integer number (157875906).

Almost surely, 2^622216739 is an apocalyptic number.

622216739 is a deficient number, since it is larger than the sum of its proper divisors (9286885).

622216739 is an equidigital number, since it uses as much as digits as its factorization.

622216739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9286884.

The product of its digits is 54432, while the sum is 38.

The square root of 622216739 is about 24944.2726692922. The cubic root of 622216739 is about 853.7169355676.

The spelling of 622216739 in words is "six hundred twenty-two million, two hundred sixteen thousand, seven hundred thirty-nine".