87113771 has 2 divisors, whose sum is σ = 87113772. Its totient is φ = 87113770.

The previous prime is 87113749. The next prime is 87113783. The reversal of 87113771 is 17731178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87113771 - 2¹⁸ = 86851627 is a prime.

It is a super-3 number, since 3×87113771³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87113731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43556885 + 43556886.

It is an arithmetic number, because the mean of its divisors is an integer number (43556886).

Almost surely, 2^87113771 is an apocalyptic number.

87113771 is a deficient number, since it is larger than the sum of its proper divisors (1).

87113771 is an equidigital number, since it uses as much as digits as its factorization.

87113771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8232, while the sum is 35.

The square root of 87113771 is about 9333.4758262932. The cubic root of 87113771 is about 443.2978292684.

The spelling of 87113771 in words is "eighty-seven million, one hundred thirteen thousand, seven hundred seventy-one".