622079987 has 2 divisors, whose sum is σ = 622079988. Its totient is φ = 622079986.

The previous prime is 622079977. The next prime is 622079989. The reversal of 622079987 is 789970226.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 622079987 - 2²² = 617885683 is a prime.

Together with 622079989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (622079989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311039993 + 311039994.

It is an arithmetic number, because the mean of its divisors is an integer number (311039994).

Almost surely, 2^622079987 is an apocalyptic number.

622079987 is a deficient number, since it is larger than the sum of its proper divisors (1).

622079987 is an equidigital number, since it uses as much as digits as its factorization.

622079987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 622079987 is about 24941.5313683823. The cubic root of 622079987 is about 853.6543871312.

The spelling of 622079987 in words is "six hundred twenty-two million, seventy-nine thousand, nine hundred eighty-seven".