620481 has 4 divisors (see below), whose sum is σ = 827312. Its totient is φ = 413652.

The previous prime is 620467. The next prime is 620491. The reversal of 620481 is 184026.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 620481 - 2¹⁷ = 489409 is a prime.

It is a super-2 number, since 2×620481² = 769993342722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620481.

It is not an unprimeable number, because it can be changed into a prime (620401) 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 3 ways as a sum of consecutive naturals, for example, 103411 + ... + 103416.

It is an arithmetic number, because the mean of its divisors is an integer number (206828).

2⁶²⁰⁴⁸¹ is an apocalyptic number.

It is an amenable number.

620481 is a deficient number, since it is larger than the sum of its proper divisors (206831).

620481 is a wasteful number, since it uses less digits than its factorization.

620481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206830.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 620481 is about 787.7061634899. The cubic root of 620481 is about 85.2922351873.

The spelling of 620481 in words is "six hundred twenty thousand, four hundred eighty-one".