71945463 has 4 divisors (see below), whose sum is σ = 95927288. Its totient is φ = 47963640.

The previous prime is 71945443. The next prime is 71945473. The reversal of 71945463 is 36454917.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36454917 = 3 ⋅12151639.

It is not a de Polignac number, because 71945463 - 2²⁰ = 70896887 is a prime.

It is a super-2 number, since 2×71945463² = 10352299292568738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71945443) 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, 11990908 + ... + 11990913.

It is an arithmetic number, because the mean of its divisors is an integer number (23981822).

Almost surely, 2^71945463 is an apocalyptic number.

71945463 is a deficient number, since it is larger than the sum of its proper divisors (23981825).

71945463 is a wasteful number, since it uses less digits than its factorization.

71945463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23981824.

The product of its digits is 90720, while the sum is 39.

The square root of 71945463 is about 8482.0671419177. The cubic root of 71945463 is about 415.9116996234.

The spelling of 71945463 in words is "seventy-one million, nine hundred forty-five thousand, four hundred sixty-three".