87698688 has 144 divisors (see below), whose sum is σ = 291196416. Its totient is φ = 22763520.

The previous prime is 87698683. The next prime is 87698693. The reversal of 87698688 is 88689678.

It is an interprime number because it is at equal distance from previous prime (87698683) and next prime (87698693).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87698683) 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, 58395 + ... + 59877.

Almost surely, 2^87698688 is an apocalyptic number.

87698688 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87698688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145598208).

87698688 is an abundant number, since it is smaller than the sum of its proper divisors (203497728).

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

87698688 is a wasteful number, since it uses less digits than its factorization.

87698688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1506 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 60.

The square root of 87698688 is about 9364.7577651534. The cubic root of 87698688 is about 444.2877770773.

The spelling of 87698688 in words is "eighty-seven million, six hundred ninety-eight thousand, six hundred eighty-eight".