71873653 has 2 divisors, whose sum is σ = 71873654. Its totient is φ = 71873652.

The previous prime is 71873621. The next prime is 71873657. The reversal of 71873653 is 35637817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59320804 + 12552849 = 7702^2 + 3543^2 .

It is a cyclic number.

It is not a de Polignac number, because 71873653 - 2⁵ = 71873621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71873657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35936826 + 35936827.

It is an arithmetic number, because the mean of its divisors is an integer number (35936827).

Almost surely, 2^71873653 is an apocalyptic number.

It is an amenable number.

71873653 is a deficient number, since it is larger than the sum of its proper divisors (1).

71873653 is an equidigital number, since it uses as much as digits as its factorization.

71873653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 71873653 is about 8477.8330368084. The cubic root of 71873653 is about 415.7732773602.

The spelling of 71873653 in words is "seventy-one million, eight hundred seventy-three thousand, six hundred fifty-three".