213717633 has 16 divisors (see below), whose sum is σ = 298112640. Its totient is φ = 135932544.

The previous prime is 213717629. The next prime is 213717667. The reversal of 213717633 is 336717312.

It is a happy number.

It is not a de Polignac number, because 213717633 - 2² = 213717629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213717594 and 213717603.

It is not an unprimeable number, because it can be changed into a prime (213717683) 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, 24435 + ... + 32007.

It is an arithmetic number, because the mean of its divisors is an integer number (18632040).

Almost surely, 2^213717633 is an apocalyptic number.

213717633 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

213717633 is a deficient number, since it is larger than the sum of its proper divisors (84395007).

213717633 is a wasteful number, since it uses less digits than its factorization.

213717633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8008.

The product of its digits is 15876, while the sum is 33.

The square root of 213717633 is about 14619.0845472622. The cubic root of 213717633 is about 597.8792098027.

The spelling of 213717633 in words is "two hundred thirteen million, seven hundred seventeen thousand, six hundred thirty-three".