3688703987 has 2 divisors, whose sum is σ = 3688703988. Its totient is φ = 3688703986.

The previous prime is 3688703971. The next prime is 3688704001. The reversal of 3688703987 is 7893078863.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3688703987 - 2⁴ = 3688703971 is a prime.

It is not a weakly prime, because it can be changed into another prime (3688703917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844351993 + 1844351994.

It is an arithmetic number, because the mean of its divisors is an integer number (1844351994).

Almost surely, 2^3688703987 is an apocalyptic number.

3688703987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3688703987 is an equidigital number, since it uses as much as digits as its factorization.

3688703987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The square root of 3688703987 is about 60734.7016704618. The cubic root of 3688703987 is about 1545.1047763241.

The spelling of 3688703987 in words is "three billion, six hundred eighty-eight million, seven hundred three thousand, nine hundred eighty-seven".