9561700087 has 16 divisors (see below), whose sum is σ = 10195384320. Its totient is φ = 8941795200.

The previous prime is 9561700073. The next prime is 9561700091. The reversal of 9561700087 is 7800071659.

It is not a de Polignac number, because 9561700087 - 2¹¹ = 9561698039 is a prime.

It is a super-2 number, since 2×9561700087² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9561700387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465343 + ... + 485455.

It is an arithmetic number, because the mean of its divisors is an integer number (637211520).

Almost surely, 2^9561700087 is an apocalyptic number.

9561700087 is a deficient number, since it is larger than the sum of its proper divisors (633684233).

9561700087 is a wasteful number, since it uses less digits than its factorization.

9561700087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20454.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 9561700087 is about 97783.9459574014. The cubic root of 9561700087 is about 2122.4870011500.

The spelling of 9561700087 in words is "nine billion, five hundred sixty-one million, seven hundred thousand, eighty-seven".