87659740 has 48 divisors (see below), whose sum is σ = 211200192. Its totient is φ = 29938176.

The previous prime is 87659731. The next prime is 87659777. The reversal of 87659740 is 4795678.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39952 + ... + 42088.

It is an arithmetic number, because the mean of its divisors is an integer number (4400004).

Almost surely, 2^87659740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87659740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105600096).

87659740 is an abundant number, since it is smaller than the sum of its proper divisors (123540452).

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

87659740 is a wasteful number, since it uses less digits than its factorization.

87659740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446 (or 2444 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 87659740 is about 9362.6780356904. The cubic root of 87659740 is about 444.2219962277.

The spelling of 87659740 in words is "eighty-seven million, six hundred fifty-nine thousand, seven hundred forty".