622309887 has 6 divisors (see below), whose sum is σ = 898892072. Its totient is φ = 414873252.

The previous prime is 622309859. The next prime is 622309901. The reversal of 622309887 is 788903226.

It is not a de Polignac number, because 622309887 - 2¹⁵ = 622277119 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 (622309087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34572763 + ... + 34572780.

Almost surely, 2^622309887 is an apocalyptic number.

622309887 is a deficient number, since it is larger than the sum of its proper divisors (276582185).

622309887 is a wasteful number, since it uses less digits than its factorization.

622309887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69145549 (or 69145546 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 622309887 is about 24946.1397214078. The cubic root of 622309887 is about 853.7595349022.

The spelling of 622309887 in words is "six hundred twenty-two million, three hundred nine thousand, eight hundred eighty-seven".