620535213 has 12 divisors (see below), whose sum is σ = 905204508. Its totient is φ = 409593600.

The previous prime is 620535211. The next prime is 620535221. The reversal of 620535213 is 312535026.

620535213 is a `hidden beast` number, since 620 + 5 + 35 + 2 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 372567204 + 247968009 = 19302^2 + 15747^2 .

It is not a de Polignac number, because 620535213 - 2¹ = 620535211 is a prime.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620535211) 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, 340420 + ... + 342237.

It is an arithmetic number, because the mean of its divisors is an integer number (75433709).

Almost surely, 2^620535213 is an apocalyptic number.

It is an amenable number.

620535213 is a deficient number, since it is larger than the sum of its proper divisors (284669295).

620535213 is a wasteful number, since it uses less digits than its factorization.

620535213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682764 (or 682761 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 620535213 is about 24910.5442132443. The cubic root of 620535213 is about 852.9471918131.

The spelling of 620535213 in words is "six hundred twenty million, five hundred thirty-five thousand, two hundred thirteen".