87004777 has 2 divisors, whose sum is σ = 87004778. Its totient is φ = 87004776.

The previous prime is 87004741. The next prime is 87004789. The reversal of 87004777 is 77740078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76108176 + 10896601 = 8724^2 + 3301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87004777 is a prime.

It is not a weakly prime, because it can be changed into another prime (87004717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43502388 + 43502389.

It is an arithmetic number, because the mean of its divisors is an integer number (43502389).

Almost surely, 2^87004777 is an apocalyptic number.

It is an amenable number.

87004777 is a deficient number, since it is larger than the sum of its proper divisors (1).

87004777 is an equidigital number, since it uses as much as digits as its factorization.

87004777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76832, while the sum is 40.

The square root of 87004777 is about 9327.6351236527. The cubic root of 87004777 is about 443.1128720265.

The spelling of 87004777 in words is "eighty-seven million, four thousand, seven hundred seventy-seven".