620435 has 4 divisors (see below), whose sum is σ = 744528. Its totient is φ = 496344.

The previous prime is 620429. The next prime is 620437. The reversal of 620435 is 534026.

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 620435 - 2¹⁶ = 554899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62039 + ... + 62048.

It is an arithmetic number, because the mean of its divisors is an integer number (186132).

2⁶²⁰⁴³⁵ is an apocalyptic number.

620435 is a deficient number, since it is larger than the sum of its proper divisors (124093).

620435 is a wasteful number, since it uses less digits than its factorization.

620435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124092.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 620435 is about 787.6769642436. The cubic root of 620435 is about 85.2901273925.

The spelling of 620435 in words is "six hundred twenty thousand, four hundred thirty-five".