71632919 has 2 divisors, whose sum is σ = 71632920. Its totient is φ = 71632918.

The previous prime is 71632889. The next prime is 71632921. The reversal of 71632919 is 91923617.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71632919 - 2¹⁶ = 71567383 is a prime.

It is a super-2 number, since 2×71632919² = 10262550168921122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 71632921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71632949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35816459 + 35816460.

It is an arithmetic number, because the mean of its divisors is an integer number (35816460).

Almost surely, 2^71632919 is an apocalyptic number.

71632919 is a deficient number, since it is larger than the sum of its proper divisors (1).

71632919 is an equidigital number, since it uses as much as digits as its factorization.

71632919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 38.

The square root of 71632919 is about 8463.6232784783. The cubic root of 71632919 is about 415.3085603809.

The spelling of 71632919 in words is "seventy-one million, six hundred thirty-two thousand, nine hundred nineteen".