620705 has 8 divisors (see below), whose sum is σ = 762432. Its totient is φ = 484848.

The previous prime is 620693. The next prime is 620717. The reversal of 620705 is 507026.

It is an interprime number because it is at equal distance from previous prime (620693) and next prime (620717).

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 620705 - 2⁴ = 620689 is a prime.

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 620705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229 + ... + 1658.

It is an arithmetic number, because the mean of its divisors is an integer number (95304).

2⁶²⁰⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

620705 is a deficient number, since it is larger than the sum of its proper divisors (141727).

620705 is a wasteful number, since it uses less digits than its factorization.

620705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 620705 is about 787.8483356586. The cubic root of 620705 is about 85.3024977428.

The spelling of 620705 in words is "six hundred twenty thousand, seven hundred five".