71597023 has 2 divisors, whose sum is σ = 71597024. Its totient is φ = 71597022.

The previous prime is 71596963. The next prime is 71597059. The reversal of 71597023 is 32079517.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71597023 - 2¹⁷ = 71465951 is a prime.

It is a super-2 number, since 2×71597023² = 10252267404925058, which contains 22 as substring.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 71597023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71597063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35798511 + 35798512.

It is an arithmetic number, because the mean of its divisors is an integer number (35798512).

Almost surely, 2^71597023 is an apocalyptic number.

71597023 is a deficient number, since it is larger than the sum of its proper divisors (1).

71597023 is an equidigital number, since it uses as much as digits as its factorization.

71597023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 71597023 is about 8461.5024079651. The cubic root of 71597023 is about 415.2391769784.

The spelling of 71597023 in words is "seventy-one million, five hundred ninety-seven thousand, twenty-three".