87040297 has 2 divisors, whose sum is σ = 87040298. Its totient is φ = 87040296.

The previous prime is 87040267. The next prime is 87040301. The reversal of 87040297 is 79204078.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69155856 + 17884441 = 8316^2 + 4229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87040297 is a prime.

It is not a weakly prime, because it can be changed into another prime (87040237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43520148 + 43520149.

It is an arithmetic number, because the mean of its divisors is an integer number (43520149).

Almost surely, 2^87040297 is an apocalyptic number.

It is an amenable number.

87040297 is a deficient number, since it is larger than the sum of its proper divisors (1).

87040297 is an equidigital number, since it uses as much as digits as its factorization.

87040297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 87040297 is about 9329.5389489513. The cubic root of 87040297 is about 443.1731646080.

The spelling of 87040297 in words is "eighty-seven million, forty thousand, two hundred ninety-seven".