620791 has 4 divisors (see below), whose sum is σ = 635272. Its totient is φ = 606312.

The previous prime is 620777. The next prime is 620813. The reversal of 620791 is 197026.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 620791 - 2⁵ = 620759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7176 + ... + 7261.

It is an arithmetic number, because the mean of its divisors is an integer number (158818).

2⁶²⁰⁷⁹¹ is an apocalyptic number.

620791 is a deficient number, since it is larger than the sum of its proper divisors (14481).

620791 is a wasteful number, since it uses less digits than its factorization.

620791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14480.

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

The square root of 620791 is about 787.9029128008. The cubic root of 620791 is about 85.3064371751.

The spelling of 620791 in words is "six hundred twenty thousand, seven hundred ninety-one".