487147777 has 2 divisors, whose sum is σ = 487147778. Its totient is φ = 487147776.

The previous prime is 487147763. The next prime is 487147789. The reversal of 487147777 is 777741784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423083761 + 64064016 = 20569^2 + 8004^2 .

It is a cyclic number.

It is not a de Polignac number, because 487147777 - 2²⁷ = 352930049 is a prime.

It is not a weakly prime, because it can be changed into another prime (487147277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243573888 + 243573889.

It is an arithmetic number, because the mean of its divisors is an integer number (243573889).

Almost surely, 2^487147777 is an apocalyptic number.

It is an amenable number.

487147777 is a deficient number, since it is larger than the sum of its proper divisors (1).

487147777 is an equidigital number, since it uses as much as digits as its factorization.

487147777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2151296, while the sum is 52.

The square root of 487147777 is about 22071.4244442900. The cubic root of 487147777 is about 786.8408671922.

The spelling of 487147777 in words is "four hundred eighty-seven million, one hundred forty-seven thousand, seven hundred seventy-seven".