71683487 has 2 divisors, whose sum is σ = 71683488. Its totient is φ = 71683486.

The previous prime is 71683483. The next prime is 71683519. The reversal of 71683487 is 78438617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71683487 - 2² = 71683483 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 (71683483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35841743 + 35841744.

It is an arithmetic number, because the mean of its divisors is an integer number (35841744).

Almost surely, 2^71683487 is an apocalyptic number.

71683487 is a deficient number, since it is larger than the sum of its proper divisors (1).

71683487 is an equidigital number, since it uses as much as digits as its factorization.

71683487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 44.

The square root of 71683487 is about 8466.6101244831. The cubic root of 71683487 is about 415.4062639864.

The spelling of 71683487 in words is "seventy-one million, six hundred eighty-three thousand, four hundred eighty-seven".