622866393 has 12 divisors (see below), whose sum is σ = 905656128. Its totient is φ = 412493400.

The previous prime is 622866337. The next prime is 622866407. The reversal of 622866393 is 393668226.

622866393 is a `hidden beast` number, since 6 + 2 + 2 + 8 + 6 + 639 + 3 = 666.

It is not a de Polignac number, because 622866393 - 2²⁰ = 621817817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (622866313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227805 + ... + 230522.

It is an arithmetic number, because the mean of its divisors is an integer number (75471344).

Almost surely, 2^622866393 is an apocalyptic number.

It is an amenable number.

622866393 is a deficient number, since it is larger than the sum of its proper divisors (282789735).

622866393 is a wasteful number, since it uses less digits than its factorization.

622866393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458484 (or 458481 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 622866393 is about 24957.2913794747. The cubic root of 622866393 is about 854.0139530287.

The spelling of 622866393 in words is "six hundred twenty-two million, eight hundred sixty-six thousand, three hundred ninety-three".