71261623 has 2 divisors, whose sum is σ = 71261624. Its totient is φ = 71261622.

The previous prime is 71261611. The next prime is 71261629. The reversal of 71261623 is 32616217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71261623 - 2⁹ = 71261111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71261591 and 71261600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71261629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35630811 + 35630812.

It is an arithmetic number, because the mean of its divisors is an integer number (35630812).

Almost surely, 2^71261623 is an apocalyptic number.

71261623 is a deficient number, since it is larger than the sum of its proper divisors (1).

71261623 is an equidigital number, since it uses as much as digits as its factorization.

71261623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 71261623 is about 8441.6599670918. The cubic root of 71261623 is about 414.5897586259.

The spelling of 71261623 in words is "seventy-one million, two hundred sixty-one thousand, six hundred twenty-three".