71307653 has 2 divisors, whose sum is σ = 71307654. Its totient is φ = 71307652.

The previous prime is 71307637. The next prime is 71307671. The reversal of 71307653 is 35670317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55681444 + 15626209 = 7462^2 + 3953^2 .

It is a cyclic number.

It is not a de Polignac number, because 71307653 - 2⁴ = 71307637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71307683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35653826 + 35653827.

It is an arithmetic number, because the mean of its divisors is an integer number (35653827).

Almost surely, 2^71307653 is an apocalyptic number.

It is an amenable number.

71307653 is a deficient number, since it is larger than the sum of its proper divisors (1).

71307653 is an equidigital number, since it uses as much as digits as its factorization.

71307653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 32.

The square root of 71307653 is about 8444.3858864929. The cubic root of 71307653 is about 414.6790046950.

The spelling of 71307653 in words is "seventy-one million, three hundred seven thousand, six hundred fifty-three".