620426 has 16 divisors (see below), whose sum is σ = 1015200. Its totient is φ = 283248.

The previous prime is 620413. The next prime is 620429. The reversal of 620426 is 624026.

It is a junction number, because it is equal to n+sod(n) for n = 620398 and 620407.

It is not an unprimeable number, because it can be changed into a prime (620429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (63450).

2⁶²⁰⁴²⁶ is an apocalyptic number.

620426 is a deficient number, since it is larger than the sum of its proper divisors (394774).

620426 is a wasteful number, since it uses less digits than its factorization.

620426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 620426 is about 787.6712512210. The cubic root of 620426 is about 85.2897149857.

Subtracting 620426 from its reverse (624026), we obtain a square (3600 = 60²).

The spelling of 620426 in words is "six hundred twenty thousand, four hundred twenty-six".