87652777 has 2 divisors, whose sum is σ = 87652778. Its totient is φ = 87652776.

The previous prime is 87652771. The next prime is 87652781. The reversal of 87652777 is 77725678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75846681 + 11806096 = 8709^2 + 3436^2 .

It is a cyclic number.

It is not a de Polignac number, because 87652777 - 2¹⁵ = 87620009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87652777.

It is not a weakly prime, because it can be changed into another prime (87652771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43826388 + 43826389.

It is an arithmetic number, because the mean of its divisors is an integer number (43826389).

Almost surely, 2^87652777 is an apocalyptic number.

It is an amenable number.

87652777 is a deficient number, since it is larger than the sum of its proper divisors (1).

87652777 is an equidigital number, since it uses as much as digits as its factorization.

87652777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152480, while the sum is 49.

The square root of 87652777 is about 9362.3061795692. The cubic root of 87652777 is about 444.2102340829.

It can be divided in two parts, 87 and 652777, that added together give a square (652864 = 808²).

The spelling of 87652777 in words is "eighty-seven million, six hundred fifty-two thousand, seven hundred seventy-seven".