87328957 has 2 divisors, whose sum is σ = 87328958. Its totient is φ = 87328956.

The previous prime is 87328933. The next prime is 87328963. The reversal of 87328957 is 75982378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74839801 + 12489156 = 8651^2 + 3534^2 .

It is a cyclic number.

It is not a de Polignac number, because 87328957 - 2¹⁵ = 87296189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87328957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87328987) 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, 43664478 + 43664479.

It is an arithmetic number, because the mean of its divisors is an integer number (43664479).

Almost surely, 2^87328957 is an apocalyptic number.

It is an amenable number.

87328957 is a deficient number, since it is larger than the sum of its proper divisors (1).

87328957 is an equidigital number, since it uses as much as digits as its factorization.

87328957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 49.

The square root of 87328957 is about 9344.9963616900. The cubic root of 87328957 is about 443.6625364352.

It can be divided in two parts, 8732 and 8957, that added together give a square (17689 = 133²).

The spelling of 87328957 in words is "eighty-seven million, three hundred twenty-eight thousand, nine hundred fifty-seven".