620575 has 12 divisors (see below), whose sum is σ = 780208. Its totient is φ = 489600.

The previous prime is 620569. The next prime is 620579. The reversal of 620575 is 575026.

It is a happy number.

It is not a de Polignac number, because 620575 - 2³ = 620567 is a prime.

It is a super-2 number, since 2×620575² = 770226661250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2455 + ... + 2695.

2⁶²⁰⁵⁷⁵ is an apocalyptic number.

620575 is a deficient number, since it is larger than the sum of its proper divisors (159633).

620575 is a wasteful number, since it uses less digits than its factorization.

620575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 620575 is about 787.7658281495. The cubic root of 620575 is about 85.2965420961.

The spelling of 620575 in words is "six hundred twenty thousand, five hundred seventy-five".