71963783 has 2 divisors, whose sum is σ = 71963784. Its totient is φ = 71963782.

The previous prime is 71963747. The next prime is 71963791. The reversal of 71963783 is 38736917.

It is a strong prime.

It is an emirp because it is prime and its reverse (38736917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71963783 - 2⁶ = 71963719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71962783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35981891 + 35981892.

It is an arithmetic number, because the mean of its divisors is an integer number (35981892).

Almost surely, 2^71963783 is an apocalyptic number.

71963783 is a deficient number, since it is larger than the sum of its proper divisors (1).

71963783 is an equidigital number, since it uses as much as digits as its factorization.

71963783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 71963783 is about 8483.1469986085. The cubic root of 71963783 is about 415.9469988412.

The spelling of 71963783 in words is "seventy-one million, nine hundred sixty-three thousand, seven hundred eighty-three".