87618071 has 2 divisors, whose sum is σ = 87618072. Its totient is φ = 87618070.

The previous prime is 87618061. The next prime is 87618079. The reversal of 87618071 is 17081678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87618071 - 2²⁶ = 20509207 is a prime.

It is a super-2 number, since 2×87618071² = 15353852731522082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87618079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43809035 + 43809036.

It is an arithmetic number, because the mean of its divisors is an integer number (43809036).

Almost surely, 2^87618071 is an apocalyptic number.

87618071 is a deficient number, since it is larger than the sum of its proper divisors (1).

87618071 is an equidigital number, since it uses as much as digits as its factorization.

87618071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 87618071 is about 9360.4524997459. The cubic root of 87618071 is about 444.1515981936.

The spelling of 87618071 in words is "eighty-seven million, six hundred eighteen thousand, seventy-one".