4787077661 has 2 divisors, whose sum is σ = 4787077662. Its totient is φ = 4787077660.

The previous prime is 4787077639. The next prime is 4787077679. The reversal of 4787077661 is 1667707874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4525252900 + 261824761 = 67270^2 + 16181^2 .

It is a cyclic number.

It is not a de Polignac number, because 4787077661 - 2⁶ = 4787077597 is a prime.

It is a super-2 number, since 2×4787077661² = 45832225064890461842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4787077681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2393538830 + 2393538831.

It is an arithmetic number, because the mean of its divisors is an integer number (2393538831).

Almost surely, 2^4787077661 is an apocalyptic number.

It is an amenable number.

4787077661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4787077661 is an equidigital number, since it uses as much as digits as its factorization.

4787077661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2765952, while the sum is 53.

The square root of 4787077661 is about 69188.7105025090. The cubic root of 4787077661 is about 1685.3502030778.

The spelling of 4787077661 in words is "four billion, seven hundred eighty-seven million, seventy-seven thousand, six hundred sixty-one".