87020357 has 2 divisors, whose sum is σ = 87020358. Its totient is φ = 87020356.

The previous prime is 87020333. The next prime is 87020363. The reversal of 87020357 is 75302078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55368481 + 31651876 = 7441^2 + 5626^2 .

It is a cyclic number.

It is not a de Polignac number, because 87020357 - 2¹⁰ = 87019333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87020377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43510178 + 43510179.

It is an arithmetic number, because the mean of its divisors is an integer number (43510179).

Almost surely, 2^87020357 is an apocalyptic number.

It is an amenable number.

87020357 is a deficient number, since it is larger than the sum of its proper divisors (1).

87020357 is an equidigital number, since it uses as much as digits as its factorization.

87020357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 87020357 is about 9328.4702390049. The cubic root of 87020357 is about 443.1393199479.

The spelling of 87020357 in words is "eighty-seven million, twenty thousand, three hundred fifty-seven".