87090354685 has 8 divisors (see below), whose sum is σ = 104511168216. Its totient is φ = 69670455360.

The previous prime is 87090354647. The next prime is 87090354707. The reversal of 87090354685 is 58645309078.

It can be written as a sum of positive squares in 4 ways, for example, as 63584676 + 87026770009 = 7974^2 + 295003^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87090354685 - 2¹⁷ = 87090223613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2215 + ... + 417355.

It is an arithmetic number, because the mean of its divisors is an integer number (13063896027).

Almost surely, 2^87090354685 is an apocalyptic number.

It is an amenable number.

87090354685 is a deficient number, since it is larger than the sum of its proper divisors (17420813531).

87090354685 is a wasteful number, since it uses less digits than its factorization.

87090354685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457103.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 87090354685 in words is "eighty-seven billion, ninety million, three hundred fifty-four thousand, six hundred eighty-five".