87880297 has 2 divisors, whose sum is σ = 87880298. Its totient is φ = 87880296.

The previous prime is 87880283. The next prime is 87880313. The reversal of 87880297 is 79208878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51108201 + 36772096 = 7149^2 + 6064^2 .

It is a cyclic number.

It is not a de Polignac number, because 87880297 - 2²³ = 79491689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87880297.

It is not a weakly prime, because it can be changed into another prime (87880207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43940148 + 43940149.

It is an arithmetic number, because the mean of its divisors is an integer number (43940149).

Almost surely, 2^87880297 is an apocalyptic number.

It is an amenable number.

87880297 is a deficient number, since it is larger than the sum of its proper divisors (1).

87880297 is an equidigital number, since it uses as much as digits as its factorization.

87880297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 49.

The square root of 87880297 is about 9374.4491571505. The cubic root of 87880297 is about 444.5942469863.

The spelling of 87880297 in words is "eighty-seven million, eight hundred eighty thousand, two hundred ninety-seven".