622598 has 4 divisors (see below), whose sum is σ = 933900. Its totient is φ = 311298.

The previous prime is 622577. The next prime is 622603. The reversal of 622598 is 895226.

Added to its reverse (895226) it gives a square (1517824 = 1232²).

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155648 + ... + 155651.

It is an arithmetic number, because the mean of its divisors is an integer number (233475).

2⁶²²⁵⁹⁸ is an apocalyptic number.

622598 is a deficient number, since it is larger than the sum of its proper divisors (311302).

622598 is a wasteful number, since it uses less digits than its factorization.

622598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311301.

The product of its digits is 8640, while the sum is 32.

The square root of 622598 is about 789.0487944354. The cubic root of 622598 is about 85.3891270594.

Adding to 622598 its reverse (895226), we get a square (1517824 = 1232²).

The spelling of 622598 in words is "six hundred twenty-two thousand, five hundred ninety-eight".