213696635 has 4 divisors (see below), whose sum is σ = 256435968. Its totient is φ = 170957304.

The previous prime is 213696619. The next prime is 213696683. The reversal of 213696635 is 536696312.

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 213696635 - 2⁴ = 213696619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213696592 and 213696601.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21369659 + ... + 21369668.

It is an arithmetic number, because the mean of its divisors is an integer number (64108992).

Almost surely, 2^213696635 is an apocalyptic number.

213696635 is a deficient number, since it is larger than the sum of its proper divisors (42739333).

213696635 is an equidigital number, since it uses as much as digits as its factorization.

213696635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42739332.

The product of its digits is 174960, while the sum is 41.

The square root of 213696635 is about 14618.3663587967. The cubic root of 213696635 is about 597.8596283910.

The spelling of 213696635 in words is "two hundred thirteen million, six hundred ninety-six thousand, six hundred thirty-five".