87217337 has 2 divisors, whose sum is σ = 87217338. Its totient is φ = 87217336.

The previous prime is 87217321. The next prime is 87217349. The reversal of 87217337 is 73371278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79905721 + 7311616 = 8939^2 + 2704^2 .

It is a cyclic number.

It is not a de Polignac number, because 87217337 - 2⁴ = 87217321 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87217337.

It is not a weakly prime, because it can be changed into another prime (87217367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43608668 + 43608669.

It is an arithmetic number, because the mean of its divisors is an integer number (43608669).

Almost surely, 2^87217337 is an apocalyptic number.

It is an amenable number.

87217337 is a deficient number, since it is larger than the sum of its proper divisors (1).

87217337 is an equidigital number, since it uses as much as digits as its factorization.

87217337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49392, while the sum is 38.

The square root of 87217337 is about 9339.0222721653. The cubic root of 87217337 is about 443.4734325847.

The spelling of 87217337 in words is "eighty-seven million, two hundred seventeen thousand, three hundred thirty-seven".