87746117 has 2 divisors, whose sum is σ = 87746118. Its totient is φ = 87746116.

The previous prime is 87746093. The next prime is 87746137. The reversal of 87746117 is 71164778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87590881 + 155236 = 9359^2 + 394^2 .

It is a cyclic number.

It is not a de Polignac number, because 87746117 - 2¹² = 87742021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87746137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43873058 + 43873059.

It is an arithmetic number, because the mean of its divisors is an integer number (43873059).

Almost surely, 2^87746117 is an apocalyptic number.

It is an amenable number.

87746117 is a deficient number, since it is larger than the sum of its proper divisors (1).

87746117 is an equidigital number, since it uses as much as digits as its factorization.

87746117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65856, while the sum is 41.

The square root of 87746117 is about 9367.2897360976. The cubic root of 87746117 is about 444.3678555364.

The spelling of 87746117 in words is "eighty-seven million, seven hundred forty-six thousand, one hundred seventeen".