71449786 has 4 divisors (see below), whose sum is σ = 107174682. Its totient is φ = 35724892.

The previous prime is 71449783. The next prime is 71449811. The reversal of 71449786 is 68794417.

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

It can be written as a sum of positive squares in only one way, i.e., 57988225 + 13461561 = 7615^2 + 3669^2 .

It is not an unprimeable number, because it can be changed into a prime (71449783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17862445 + ... + 17862448.

Almost surely, 2^71449786 is an apocalyptic number.

71449786 is a deficient number, since it is larger than the sum of its proper divisors (35724896).

71449786 is a wasteful number, since it uses less digits than its factorization.

71449786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35724895.

The product of its digits is 338688, while the sum is 46.

The square root of 71449786 is about 8452.7975250801. The cubic root of 71449786 is about 414.9543395837.

The spelling of 71449786 in words is "seventy-one million, four hundred forty-nine thousand, seven hundred eighty-six".