71816630 has 32 divisors (see below), whose sum is σ = 134791776. Its totient is φ = 27523584.

The previous prime is 71816623. The next prime is 71816639. The reversal of 71816630 is 3661817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71816639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23342 + ... + 26238.

It is an arithmetic number, because the mean of its divisors is an integer number (4212243).

Almost surely, 2^71816630 is an apocalyptic number.

71816630 is a deficient number, since it is larger than the sum of its proper divisors (62975146).

71816630 is a wasteful number, since it uses less digits than its factorization.

71816630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 71816630 is about 8474.4693049182. The cubic root of 71816630 is about 415.6632930968.

The spelling of 71816630 in words is "seventy-one million, eight hundred sixteen thousand, six hundred thirty".