71063967 has 32 divisors (see below), whose sum is σ = 104843200. Its totient is φ = 42550272.

The previous prime is 71063929. The next prime is 71063969. The reversal of 71063967 is 76936017.

It is not a de Polignac number, because 71063967 - 2¹² = 71059871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71063969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310209 + ... + 310437.

It is an arithmetic number, because the mean of its divisors is an integer number (3276350).

Almost surely, 2^71063967 is an apocalyptic number.

71063967 is a deficient number, since it is larger than the sum of its proper divisors (33779233).

71063967 is a wasteful number, since it uses less digits than its factorization.

71063967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 71063967 is about 8429.9446617401. The cubic root of 71063967 is about 414.2060923990.

The spelling of 71063967 in words is "seventy-one million, sixty-three thousand, nine hundred sixty-seven".