71979263 has 2 divisors, whose sum is σ = 71979264. Its totient is φ = 71979262.

The previous prime is 71979227. The next prime is 71979283. The reversal of 71979263 is 36297917.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (36297917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71979263 - 2⁶ = 71979199 is a prime.

It is a super-3 number, since 3×71979263³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71979223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35989631 + 35989632.

It is an arithmetic number, because the mean of its divisors is an integer number (35989632).

Almost surely, 2^71979263 is an apocalyptic number.

71979263 is a deficient number, since it is larger than the sum of its proper divisors (1).

71979263 is an equidigital number, since it uses as much as digits as its factorization.

71979263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 44.

The square root of 71979263 is about 8484.0593467986. The cubic root of 71979263 is about 415.9768212400.

The spelling of 71979263 in words is "seventy-one million, nine hundred seventy-nine thousand, two hundred sixty-three".