71917423 has 2 divisors, whose sum is σ = 71917424. Its totient is φ = 71917422.

The previous prime is 71917409. The next prime is 71917487. The reversal of 71917423 is 32471917.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71917423 - 2²¹ = 69820271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71917493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35958711 + 35958712.

It is an arithmetic number, because the mean of its divisors is an integer number (35958712).

Almost surely, 2^71917423 is an apocalyptic number.

71917423 is a deficient number, since it is larger than the sum of its proper divisors (1).

71917423 is an equidigital number, since it uses as much as digits as its factorization.

71917423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 34.

The square root of 71917423 is about 8480.4140818712. The cubic root of 71917423 is about 415.8576601748.

The spelling of 71917423 in words is "seventy-one million, nine hundred seventeen thousand, four hundred twenty-three".