87701637606 has 64 divisors (see below), whose sum is σ = 194804663040. Its totient is φ = 26097290240.

The previous prime is 87701637601. The next prime is 87701637607. The reversal of 87701637606 is 60673610778.

It is a happy number.

It is a super-2 number, since 2×87701637606² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87701637601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3699166 + ... + 3722798.

It is an arithmetic number, because the mean of its divisors is an integer number (3043822860).

Almost surely, 2^87701637606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87701637606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97402331520).

87701637606 is an abundant number, since it is smaller than the sum of its proper divisors (107103025434).

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

87701637606 is a wasteful number, since it uses less digits than its factorization.

87701637606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24661.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 87701637606 in words is "eighty-seven billion, seven hundred one million, six hundred thirty-seven thousand, six hundred six".