620535 has 16 divisors (see below), whose sum is σ = 1018080. Its totient is φ = 322560.

The previous prime is 620531. The next prime is 620549. The reversal of 620535 is 535026.

It is not a de Polignac number, because 620535 - 2² = 620531 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620535.

It is not an unprimeable number, because it can be changed into a prime (620531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111 + ... + 1119.

It is an arithmetic number, because the mean of its divisors is an integer number (63630).

2⁶²⁰⁵³⁵ is an apocalyptic number.

620535 is a deficient number, since it is larger than the sum of its proper divisors (397545).

620535 is a wasteful number, since it uses less digits than its factorization.

620535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 620535 is about 787.7404394850. The cubic root of 620535 is about 85.2947094221.

The spelling of 620535 in words is "six hundred twenty thousand, five hundred thirty-five".