87377117 has 2 divisors, whose sum is σ = 87377118. Its totient is φ = 87377116.

The previous prime is 87377113. The next prime is 87377141. The reversal of 87377117 is 71177378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59382436 + 27994681 = 7706^2 + 5291^2 .

It is a cyclic number.

It is not a de Polignac number, because 87377117 - 2² = 87377113 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87377113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43688558 + 43688559.

It is an arithmetic number, because the mean of its divisors is an integer number (43688559).

Almost surely, 2^87377117 is an apocalyptic number.

It is an amenable number.

87377117 is a deficient number, since it is larger than the sum of its proper divisors (1).

87377117 is an equidigital number, since it uses as much as digits as its factorization.

87377117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57624, while the sum is 41.

The square root of 87377117 is about 9347.5727865580. The cubic root of 87377117 is about 443.7440781594.

The spelling of 87377117 in words is "eighty-seven million, three hundred seventy-seven thousand, one hundred seventeen".