620577 has 12 divisors (see below), whose sum is σ = 914004. Its totient is φ = 405600.

The previous prime is 620569. The next prime is 620579. The reversal of 620577 is 775026.

It can be written as a sum of positive squares in 2 ways, for example, as 156816 + 463761 = 396^2 + 681^2 .

It is not a de Polignac number, because 620577 - 2³ = 620569 is a prime.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 620577.

It is not an unprimeable number, because it can be changed into a prime (620579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (76167).

2⁶²⁰⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

620577 is a deficient number, since it is larger than the sum of its proper divisors (293427).

620577 is a wasteful number, since it uses less digits than its factorization.

620577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1357 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 620577 is about 787.7670975612. The cubic root of 620577 is about 85.2966337277.

Subtracting 620577 from its reverse (775026), we obtain a square (154449 = 393²).

The spelling of 620577 in words is "six hundred twenty thousand, five hundred seventy-seven".