87997734 has 48 divisors (see below), whose sum is σ = 209770704. Its totient is φ = 26658720.

The previous prime is 87997717. The next prime is 87997751. The reversal of 87997734 is 43779978.

It is an interprime number because it is at equal distance from previous prime (87997717) and next prime (87997751).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22122 + ... + 25794.

It is an arithmetic number, because the mean of its divisors is an integer number (4370223).

Almost surely, 2^87997734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87997734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104885352).

87997734 is an abundant number, since it is smaller than the sum of its proper divisors (121772970).

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

87997734 is a wasteful number, since it uses less digits than its factorization.

87997734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714 (or 3689 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 87997734 is about 9380.7107406635. The cubic root of 87997734 is about 444.7922002486.

The spelling of 87997734 in words is "eighty-seven million, nine hundred ninety-seven thousand, seven hundred thirty-four".