71685010 has 16 divisors (see below), whose sum is σ = 129539736. Its totient is φ = 28561408.

The previous prime is 71684993. The next prime is 71685041. The reversal of 71685010 is 1058617.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67387681 + 4297329 = 8209^2 + 2073^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 71685010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11377 + ... + 16516.

Almost surely, 2^71685010 is an apocalyptic number.

71685010 is a deficient number, since it is larger than the sum of its proper divisors (57854726).

71685010 is a wasteful number, since it uses less digits than its factorization.

71685010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28157.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 71685010 is about 8466.7000655509. The cubic root of 71685010 is about 415.4092058971.

The spelling of 71685010 in words is "seventy-one million, six hundred eighty-five thousand, ten".