87703661 has 2 divisors, whose sum is σ = 87703662. Its totient is φ = 87703660.

The previous prime is 87703643. The next prime is 87703691. The reversal of 87703661 is 16630778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64480900 + 23222761 = 8030^2 + 4819^2 .

It is a cyclic number.

It is not a de Polignac number, because 87703661 - 2⁶ = 87703597 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 (87703691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43851830 + 43851831.

It is an arithmetic number, because the mean of its divisors is an integer number (43851831).

Almost surely, 2^87703661 is an apocalyptic number.

It is an amenable number.

87703661 is a deficient number, since it is larger than the sum of its proper divisors (1).

87703661 is an equidigital number, since it uses as much as digits as its factorization.

87703661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 87703661 is about 9365.0232781344. The cubic root of 87703661 is about 444.2961747755.

The spelling of 87703661 in words is "eighty-seven million, seven hundred three thousand, six hundred sixty-one".