987834761 has 2 divisors, whose sum is σ = 987834762. Its totient is φ = 987834760.

The previous prime is 987834739. The next prime is 987834773. The reversal of 987834761 is 167438789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 900300025 + 87534736 = 30005^2 + 9356^2 .

It is a cyclic number.

It is not a de Polignac number, because 987834761 - 2⁶ = 987834697 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (987834721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493917380 + 493917381.

It is an arithmetic number, because the mean of its divisors is an integer number (493917381).

Almost surely, 2^987834761 is an apocalyptic number.

It is an amenable number.

987834761 is a deficient number, since it is larger than the sum of its proper divisors (1).

987834761 is an equidigital number, since it uses as much as digits as its factorization.

987834761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The square root of 987834761 is about 31429.8387046450. The cubic root of 987834761 is about 995.9283646188.

The spelling of 987834761 in words is "nine hundred eighty-seven million, eight hundred thirty-four thousand, seven hundred sixty-one".