71216633 has 4 divisors (see below), whose sum is σ = 71258880. Its totient is φ = 71174388.

The previous prime is 71216627. The next prime is 71216681. The reversal of 71216633 is 33661217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71216633 - 2¹⁶ = 71151097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71216596 and 71216605.

It is not an unprimeable number, because it can be changed into a prime (71216603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18485 + ... + 22002.

It is an arithmetic number, because the mean of its divisors is an integer number (17814720).

Almost surely, 2^71216633 is an apocalyptic number.

It is an amenable number.

71216633 is a deficient number, since it is larger than the sum of its proper divisors (42247).

71216633 is a wasteful number, since it uses less digits than its factorization.

71216633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42246.

The product of its digits is 4536, while the sum is 29.

The square root of 71216633 is about 8438.9947861105. The cubic root of 71216633 is about 414.5024918329.

The spelling of 71216633 in words is "seventy-one million, two hundred sixteen thousand, six hundred thirty-three".