4987061669 has 2 divisors, whose sum is σ = 4987061670. Its totient is φ = 4987061668.

The previous prime is 4987061623. The next prime is 4987061683. The reversal of 4987061669 is 9661607894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4754102500 + 232959169 = 68950^2 + 15263^2 .

It is a cyclic number.

It is not a de Polignac number, because 4987061669 - 2³² = 692094373 is a prime.

It is a super-2 number, since 2×4987061669² = 49741568180818131122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4987061969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493530834 + 2493530835.

It is an arithmetic number, because the mean of its divisors is an integer number (2493530835).

Almost surely, 2^4987061669 is an apocalyptic number.

It is an amenable number.

4987061669 is a deficient number, since it is larger than the sum of its proper divisors (1).

4987061669 is an equidigital number, since it uses as much as digits as its factorization.

4987061669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The square root of 4987061669 is about 70619.1310410996. The cubic root of 4987061669 is about 1708.4997236327.

The spelling of 4987061669 in words is "four billion, nine hundred eighty-seven million, sixty-one thousand, six hundred sixty-nine".