87656545 has 16 divisors (see below), whose sum is σ = 106900560. Its totient is φ = 68992000.

The previous prime is 87656537. The next prime is 87656563. The reversal of 87656545 is 54565678.

87656545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 8 ways, for example, as 271441 + 87385104 = 521^2 + 9348^2 .

It is not a de Polignac number, because 87656545 - 2³ = 87656537 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 87656495 and 87656504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124695 + ... + 125395.

It is an arithmetic number, because the mean of its divisors is an integer number (6681285).

Almost surely, 2^87656545 is an apocalyptic number.

It is an amenable number.

87656545 is a deficient number, since it is larger than the sum of its proper divisors (19244015).

87656545 is a wasteful number, since it uses less digits than its factorization.

87656545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076.

The product of its digits is 1008000, while the sum is 46.

The square root of 87656545 is about 9362.5074098769. The cubic root of 87656545 is about 444.2165991985.

The spelling of 87656545 in words is "eighty-seven million, six hundred fifty-six thousand, five hundred forty-five".