87726657663 has 8 divisors (see below), whose sum is σ = 129965418800. Its totient is φ = 58484438424.

The previous prime is 87726657649. The next prime is 87726657703. The reversal of 87726657663 is 36675662778.

It is not a de Polignac number, because 87726657663 - 2⁵ = 87726657631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87726657663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87726657643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1624567708 + ... + 1624567761.

It is an arithmetic number, because the mean of its divisors is an integer number (16245677350).

Almost surely, 2^87726657663 is an apocalyptic number.

87726657663 is a deficient number, since it is larger than the sum of its proper divisors (42238761137).

87726657663 is a wasteful number, since it uses less digits than its factorization.

87726657663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249135478 (or 3249135472 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 63.

The spelling of 87726657663 in words is "eighty-seven billion, seven hundred twenty-six million, six hundred fifty-seven thousand, six hundred sixty-three".