71906049 has 20 divisors (see below), whose sum is σ = 108144960. Its totient is φ = 47611800.

The previous prime is 71906017. The next prime is 71906077. The reversal of 71906049 is 94060917.

It is not a de Polignac number, because 71906049 - 2⁵ = 71906017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71906249) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9292 + ... + 15170.

It is an arithmetic number, because the mean of its divisors is an integer number (5407248).

Almost surely, 2^71906049 is an apocalyptic number.

It is an amenable number.

71906049 is a deficient number, since it is larger than the sum of its proper divisors (36238911).

71906049 is a wasteful number, since it uses less digits than its factorization.

71906049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042 (or 6033 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 71906049 is about 8479.7434513079. The cubic root of 71906049 is about 415.8357358890.

The spelling of 71906049 in words is "seventy-one million, nine hundred six thousand, forty-nine".