71379863 has 2 divisors, whose sum is σ = 71379864. Its totient is φ = 71379862.

The previous prime is 71379859. The next prime is 71379881. The reversal of 71379863 is 36897317.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71379863 - 2² = 71379859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71379463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35689931 + 35689932.

It is an arithmetic number, because the mean of its divisors is an integer number (35689932).

Almost surely, 2^71379863 is an apocalyptic number.

71379863 is a deficient number, since it is larger than the sum of its proper divisors (1).

71379863 is an equidigital number, since it uses as much as digits as its factorization.

71379863 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 71379863 is about 8448.6604263635. The cubic root of 71379863 is about 414.8189329623.

The spelling of 71379863 in words is "seventy-one million, three hundred seventy-nine thousand, eight hundred sixty-three".