87757867 has 2 divisors, whose sum is σ = 87757868. Its totient is φ = 87757866.

The previous prime is 87757849. The next prime is 87757897. The reversal of 87757867 is 76875778.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87757867 is a prime.

It is not a weakly prime, because it can be changed into another prime (87757847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43878933 + 43878934.

It is an arithmetic number, because the mean of its divisors is an integer number (43878934).

Almost surely, 2^87757867 is an apocalyptic number.

87757867 is a deficient number, since it is larger than the sum of its proper divisors (1).

87757867 is an equidigital number, since it uses as much as digits as its factorization.

87757867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4609920, while the sum is 55.

The square root of 87757867 is about 9367.9168975819. The cubic root of 87757867 is about 444.3876896116.

The spelling of 87757867 in words is "eighty-seven million, seven hundred fifty-seven thousand, eight hundred sixty-seven".