87798736 has 20 divisors (see below), whose sum is σ = 170309412. Its totient is φ = 43847936.

The previous prime is 87798719. The next prime is 87798749. The reversal of 87798736 is 63789778.

It can be written as a sum of positive squares in 2 ways, for example, as 2421136 + 85377600 = 1556^2 + 9240^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13500 + ... + 18916.

Almost surely, 2^87798736 is an apocalyptic number.

It is an amenable number.

87798736 is a deficient number, since it is larger than the sum of its proper divisors (82510676).

87798736 is a wasteful number, since it uses less digits than its factorization.

87798736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6438 (or 6432 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 55.

The square root of 87798736 is about 9370.0979717397. The cubic root of 87798736 is about 444.4566629604.

The spelling of 87798736 in words is "eighty-seven million, seven hundred ninety-eight thousand, seven hundred thirty-six".