620917 has 8 divisors (see below), whose sum is σ = 692352. Its totient is φ = 552000.

The previous prime is 620911. The next prime is 620929. The reversal of 620917 is 719026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 620917 - 2³ = 620909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620891 and 620900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84 + ... + 1117.

It is an arithmetic number, because the mean of its divisors is an integer number (86544).

2⁶²⁰⁹¹⁷ is an apocalyptic number.

It is an amenable number.

620917 is a deficient number, since it is larger than the sum of its proper divisors (71435).

620917 is a wasteful number, since it uses less digits than its factorization.

620917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 620917 is about 787.9828678341. The cubic root of 620917 is about 85.3122082446.

It can be divided in two parts, 6209 and 17, that added together give a palindrome (6226).

The spelling of 620917 in words is "six hundred twenty thousand, nine hundred seventeen".