71863461 has 6 divisors (see below), whose sum is σ = 103802790. Its totient is φ = 47908968.

The previous prime is 71863459. The next prime is 71863469. The reversal of 71863461 is 16436817.

71863461 is a `hidden beast` number, since 7 + 18 + 634 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 70459236 + 1404225 = 8394^2 + 1185^2 .

It is not a de Polignac number, because 71863461 - 2¹ = 71863459 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71863469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3992406 + ... + 3992423.

It is an arithmetic number, because the mean of its divisors is an integer number (17300465).

Almost surely, 2^71863461 is an apocalyptic number.

It is an amenable number.

71863461 is a deficient number, since it is larger than the sum of its proper divisors (31939329).

71863461 is a wasteful number, since it uses less digits than its factorization.

71863461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7984835 (or 7984832 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 71863461 is about 8477.2319184979. The cubic root of 71863461 is about 415.7536236049.

The spelling of 71863461 in words is "seventy-one million, eight hundred sixty-three thousand, four hundred sixty-one".