622487 has 4 divisors (see below), whose sum is σ = 625056. Its totient is φ = 619920.

The previous prime is 622483. The next prime is 622493. The reversal of 622487 is 784226.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784226 = 2 ⋅392113.

It is a cyclic number.

It is not a de Polignac number, because 622487 - 2² = 622483 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 2¹¹ + 4⁷ + 2¹⁹ + 8⁵ + 7³ .

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 622487.

It is not an unprimeable number, because it can be changed into a prime (622481) 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, 878 + ... + 1419.

It is an arithmetic number, because the mean of its divisors is an integer number (156264).

2⁶²²⁴⁸⁷ is an apocalyptic number.

622487 is a deficient number, since it is larger than the sum of its proper divisors (2569).

622487 is a wasteful number, since it uses less digits than its factorization.

622487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568.

The product of its digits is 5376, while the sum is 29.

The square root of 622487 is about 788.9784534447. The cubic root of 622487 is about 85.3840522190.

The spelling of 622487 in words is "six hundred twenty-two thousand, four hundred eighty-seven".