71223967 has 2 divisors, whose sum is σ = 71223968. Its totient is φ = 71223966.

The previous prime is 71223961. The next prime is 71224009. The reversal of 71223967 is 76932217.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71223967 - 2¹⁹ = 70699679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71223961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35611983 + 35611984.

It is an arithmetic number, because the mean of its divisors is an integer number (35611984).

Almost surely, 2^71223967 is an apocalyptic number.

71223967 is a deficient number, since it is larger than the sum of its proper divisors (1).

71223967 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 11 representation: 71223967 = (37227691)₁₁.

71223967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 37.

The square root of 71223967 is about 8439.4293053500. The cubic root of 71223967 is about 414.5167200489.

The spelling of 71223967 in words is "seventy-one million, two hundred twenty-three thousand, nine hundred sixty-seven".