71945461 has 8 divisors (see below), whose sum is σ = 82289024. Its totient is φ = 61618320.

The previous prime is 71945443. The next prime is 71945473. The reversal of 71945461 is 16454917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71945461 - 2¹¹ = 71943413 is a prime.

It is a super-2 number, since 2×71945461² = 10352298717005042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71945461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71945261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7471 + ... + 14131.

It is an arithmetic number, because the mean of its divisors is an integer number (10286128).

Almost surely, 2^71945461 is an apocalyptic number.

It is an amenable number.

71945461 is a deficient number, since it is larger than the sum of its proper divisors (10343563).

71945461 is a wasteful number, since it uses less digits than its factorization.

71945461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8211.

The product of its digits is 30240, while the sum is 37.

The square root of 71945461 is about 8482.0670240219. The cubic root of 71945461 is about 415.9116957695.

The spelling of 71945461 in words is "seventy-one million, nine hundred forty-five thousand, four hundred sixty-one".