87608647 has 4 divisors (see below), whose sum is σ = 100124176. Its totient is φ = 75093120.

The previous prime is 87608581. The next prime is 87608657. The reversal of 87608647 is 74680678.

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

It is a cyclic number.

It is not a de Polignac number, because 87608647 - 2⁷ = 87608519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87608597 and 87608606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87608657) 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, 6257754 + ... + 6257767.

It is an arithmetic number, because the mean of its divisors is an integer number (25031044).

Almost surely, 2^87608647 is an apocalyptic number.

87608647 is a deficient number, since it is larger than the sum of its proper divisors (12515529).

87608647 is a wasteful number, since it uses less digits than its factorization.

87608647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12515528.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 87608647 is about 9359.9490917419. The cubic root of 87608647 is about 444.1356736448.

The spelling of 87608647 in words is "eighty-seven million, six hundred eight thousand, six hundred forty-seven".