622851849 has 45 divisors (see below), whose sum is σ = 967036477. Its totient is φ = 399511656.

The previous prime is 622851847. The next prime is 622851857. The reversal of 622851849 is 948158226.

The square root of 622851849 is 24957.

It is a perfect power (a square), and thus also a powerful number.

622851849 is a `hidden beast` number, since 622 + 8 + 5 + 18 + 4 + 9 = 666.

It is not a de Polignac number, because 622851849 - 2¹ = 622851847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622851847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 10556782 + ... + 10556840.

Almost surely, 2^622851849 is an apocalyptic number.

622851849 is the 24957-th square number.

622851849 is the 12479-th centered octagonal number.

It is an amenable number.

622851849 is a deficient number, since it is larger than the sum of its proper divisors (344184628).

622851849 is an frugal number, since it uses more digits than its factorization.

622851849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 109 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The cubic root of 622851849 is about 854.0073058698.

The spelling of 622851849 in words is "six hundred twenty-two million, eight hundred fifty-one thousand, eight hundred forty-nine".