71691010 has 8 divisors (see below), whose sum is σ = 129043836. Its totient is φ = 28676400.

The previous prime is 71691007. The next prime is 71691017. The reversal of 71691010 is 1019617.

It can be written as a sum of positive squares in 2 ways, for example, as 69538921 + 2152089 = 8339^2 + 1467^2 .

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

It is not an unprimeable number, because it can be changed into a prime (71691017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3584541 + ... + 3584560.

Almost surely, 2^71691010 is an apocalyptic number.

71691010 is a deficient number, since it is larger than the sum of its proper divisors (57352826).

71691010 is a wasteful number, since it uses less digits than its factorization.

71691010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7169108.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 71691010 is about 8467.0543874479. The cubic root of 71691010 is about 415.4207954224.

The spelling of 71691010 in words is "seventy-one million, six hundred ninety-one thousand, ten".