87167797 has 2 divisors, whose sum is σ = 87167798. Its totient is φ = 87167796.

The previous prime is 87167791. The next prime is 87167803. The reversal of 87167797 is 79776178.

It is a balanced prime because it is at equal distance from previous prime (87167791) and next prime (87167803).

It can be written as a sum of positive squares in only one way, i.e., 61371556 + 25796241 = 7834^2 + 5079^2 .

It is a cyclic number.

It is not a de Polignac number, because 87167797 - 2²³ = 78779189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87167791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43583898 + 43583899.

It is an arithmetic number, because the mean of its divisors is an integer number (43583899).

Almost surely, 2^87167797 is an apocalyptic number.

It is an amenable number.

87167797 is a deficient number, since it is larger than the sum of its proper divisors (1).

87167797 is an equidigital number, since it uses as much as digits as its factorization.

87167797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1037232, while the sum is 52.

The square root of 87167797 is about 9336.3695835159. The cubic root of 87167797 is about 443.3894514423.

The spelling of 87167797 in words is "eighty-seven million, one hundred sixty-seven thousand, seven hundred ninety-seven".