620824 has 16 divisors (see below), whose sum is σ = 1181520. Its totient is φ = 305760.

The previous prime is 620821. The next prime is 620827. The reversal of 620824 is 428026.

It is an interprime number because it is at equal distance from previous prime (620821) and next prime (620827).

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 620795 and 620804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620821) 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, 22 + ... + 1114.

It is an arithmetic number, because the mean of its divisors is an integer number (73845).

2⁶²⁰⁸²⁴ is an apocalyptic number.

It is an amenable number.

620824 is a deficient number, since it is larger than the sum of its proper divisors (560696).

620824 is a wasteful number, since it uses less digits than its factorization.

620824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 620824 is about 787.9238541890. The cubic root of 620824 is about 85.3079487211.

It can be divided in two parts, 620 and 824, that added together give a square (1444 = 38²).

The spelling of 620824 in words is "six hundred twenty thousand, eight hundred twenty-four".