71956963 has 4 divisors (see below), whose sum is σ = 77492128. Its totient is φ = 66421800.

The previous prime is 71956961. The next prime is 71956967. The reversal of 71956963 is 36965917.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71956963 - 2¹ = 71956961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71956961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2767563 + ... + 2767588.

It is an arithmetic number, because the mean of its divisors is an integer number (19373032).

Almost surely, 2^71956963 is an apocalyptic number.

71956963 is a deficient number, since it is larger than the sum of its proper divisors (5535165).

71956963 is a wasteful number, since it uses less digits than its factorization.

71956963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5535164.

The product of its digits is 306180, while the sum is 46.

The square root of 71956963 is about 8482.7450156185. The cubic root of 71956963 is about 415.9338586752.

The spelling of 71956963 in words is "seventy-one million, nine hundred fifty-six thousand, nine hundred sixty-three".