8213535 has 32 divisors (see below), whose sum is σ = 15932160. Its totient is φ = 3981600.

The previous prime is 8213531. The next prime is 8213549. The reversal of 8213535 is 5353128.

It is not a de Polignac number, because 8213535 - 2² = 8213531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 8213499 and 8213508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8213531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1281 + ... + 4250.

It is an arithmetic number, because the mean of its divisors is an integer number (497880).

Almost surely, 2^8213535 is an apocalyptic number.

8213535 is a deficient number, since it is larger than the sum of its proper divisors (7718625).

8213535 is a wasteful number, since it uses less digits than its factorization.

8213535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556 (or 5550 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 8213535 is about 2865.9265517455. The cubic root of 8213535 is about 201.7638566511.

It can be divided in two parts, 821 and 3535, that added together give a square (4356 = 66²).

The spelling of 8213535 in words is "eight million, two hundred thirteen thousand, five hundred thirty-five".