620616 has 32 divisors (see below), whose sum is σ = 1634400. Its totient is φ = 195840.

The previous prime is 620603. The next prime is 620623. The reversal of 620616 is 616026.

620616 = T₃ + T₄ + ... + T₁₅₄.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 620592 and 620601.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620616.

It is an unprimeable number.

620616 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225 + ... + 1136.

It is an arithmetic number, because the mean of its divisors is an integer number (51075).

2⁶²⁰⁶¹⁶ is an apocalyptic number.

It is an amenable number.

620616 is an abundant number, since it is smaller than the sum of its proper divisors (1013784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620616 is a wasteful number, since it uses less digits than its factorization.

620616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 620616 is about 787.7918506814. The cubic root of 620616 is about 85.2984205052.

The spelling of 620616 in words is "six hundred twenty thousand, six hundred sixteen".