71840633 has 2 divisors, whose sum is σ = 71840634. Its totient is φ = 71840632.

The previous prime is 71840611. The next prime is 71840641. The reversal of 71840633 is 33604817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71690089 + 150544 = 8467^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 71840633 - 2¹² = 71836537 is a prime.

It is a super-2 number, since 2×71840633² = 10322153099681378, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71840633.

It is not a weakly prime, because it can be changed into another prime (71840693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35920316 + 35920317.

It is an arithmetic number, because the mean of its divisors is an integer number (35920317).

Almost surely, 2^71840633 is an apocalyptic number.

It is an amenable number.

71840633 is a deficient number, since it is larger than the sum of its proper divisors (1).

71840633 is an equidigital number, since it uses as much as digits as its factorization.

71840633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 71840633 is about 8475.8853814808. The cubic root of 71840633 is about 415.7095964609.

The spelling of 71840633 in words is "seventy-one million, eight hundred forty thousand, six hundred thirty-three".