87626675861 has 4 divisors (see below), whose sum is σ = 88110801324. Its totient is φ = 87142550400.

The previous prime is 87626675849. The next prime is 87626675867. The reversal of 87626675861 is 16857662678.

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 2694648100 + 84932027761 = 51910^2 + 291431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87626675861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87626675794 and 87626675803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87626675867) 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, 242062460 + ... + 242062821.

It is an arithmetic number, because the mean of its divisors is an integer number (22027700331).

Almost surely, 2^87626675861 is an apocalyptic number.

It is an amenable number.

87626675861 is a deficient number, since it is larger than the sum of its proper divisors (484125463).

87626675861 is a wasteful number, since it uses less digits than its factorization.

87626675861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484125462.

The product of its digits is 40642560, while the sum is 62.

The spelling of 87626675861 in words is "eighty-seven billion, six hundred twenty-six million, six hundred seventy-five thousand, eight hundred sixty-one".