71633069 has 4 divisors (see below), whose sum is σ = 71650944. Its totient is φ = 71615196.

The previous prime is 71633039. The next prime is 71633077. The reversal of 71633069 is 96033617.

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 a de Polignac number, because none of the positive numbers 2^k-71633069 is a prime.

It is a super-2 number, since 2×71633069² = 10262593148717522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71633039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164 + ... + 11970.

It is an arithmetic number, because the mean of its divisors is an integer number (17912736).

Almost surely, 2^71633069 is an apocalyptic number.

It is an amenable number.

71633069 is a deficient number, since it is larger than the sum of its proper divisors (17875).

71633069 is a wasteful number, since it uses less digits than its factorization.

71633069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17874.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 71633069 is about 8463.6321399267. The cubic root of 71633069 is about 415.3088502673.

The spelling of 71633069 in words is "seventy-one million, six hundred thirty-three thousand, sixty-nine".