87620604089 has 4 divisors (see below), whose sum is σ = 90642004260. Its totient is φ = 84599203920.

The previous prime is 87620604083. The next prime is 87620604119. The reversal of 87620604089 is 98040602678.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67647848464 + 19972755625 = 260092^2 + 141325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87620604089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87620604083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1510700042 + ... + 1510700099.

It is an arithmetic number, because the mean of its divisors is an integer number (22660501065).

Almost surely, 2^87620604089 is an apocalyptic number.

It is an amenable number.

87620604089 is a deficient number, since it is larger than the sum of its proper divisors (3021400171).

87620604089 is a wasteful number, since it uses less digits than its factorization.

87620604089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021400170.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 87620604089 in words is "eighty-seven billion, six hundred twenty million, six hundred four thousand, eighty-nine".