87716646 has 24 divisors (see below), whose sum is σ = 194474280. Its totient is φ = 28558656.

The previous prime is 87716621. The next prime is 87716647. The reversal of 87716646 is 64661778.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87716647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55891 + ... + 57438.

It is an arithmetic number, because the mean of its divisors is an integer number (8103095).

Almost surely, 2^87716646 is an apocalyptic number.

87716646 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

87716646 is an abundant number, since it is smaller than the sum of its proper divisors (106757634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87716646 is a wasteful number, since it uses less digits than its factorization.

87716646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113380 (or 113377 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 87716646 is about 9365.7165235768. The cubic root of 87716646 is about 444.3181005084.

The spelling of 87716646 in words is "eighty-seven million, seven hundred sixteen thousand, six hundred forty-six".