71923487 has 2 divisors, whose sum is σ = 71923488. Its totient is φ = 71923486.

The previous prime is 71923459. The next prime is 71923499. The reversal of 71923487 is 78432917.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71923487 - 2¹⁰ = 71922463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71923387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35961743 + 35961744.

It is an arithmetic number, because the mean of its divisors is an integer number (35961744).

Almost surely, 2^71923487 is an apocalyptic number.

71923487 is a deficient number, since it is larger than the sum of its proper divisors (1).

71923487 is an equidigital number, since it uses as much as digits as its factorization.

71923487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 71923487 is about 8480.7716040464. The cubic root of 71923487 is about 415.8693480703.

The spelling of 71923487 in words is "seventy-one million, nine hundred twenty-three thousand, four hundred eighty-seven".