87358819 has 2 divisors, whose sum is σ = 87358820. Its totient is φ = 87358818.

The previous prime is 87358781. The next prime is 87358867. The reversal of 87358819 is 91885378.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87358819 - 2⁹ = 87358307 is a prime.

It is a super-2 number, since 2×87358819² = 15263126514149522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87358889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43679409 + 43679410.

It is an arithmetic number, because the mean of its divisors is an integer number (43679410).

Almost surely, 2^87358819 is an apocalyptic number.

87358819 is a deficient number, since it is larger than the sum of its proper divisors (1).

87358819 is an equidigital number, since it uses as much as digits as its factorization.

87358819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 49.

The square root of 87358819 is about 9346.5939785571. The cubic root of 87358819 is about 443.7131005752.

The spelling of 87358819 in words is "eighty-seven million, three hundred fifty-eight thousand, eight hundred nineteen".