4640486777 has 2 divisors, whose sum is σ = 4640486778. Its totient is φ = 4640486776.

The previous prime is 4640486759. The next prime is 4640486797. The reversal of 4640486777 is 7776840464.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3864362896 + 776123881 = 62164^2 + 27859^2 .

It is a cyclic number.

It is not a de Polignac number, because 4640486777 - 2¹⁰ = 4640485753 is a prime.

It is not a weakly prime, because it can be changed into another prime (4640486797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2320243388 + 2320243389.

It is an arithmetic number, because the mean of its divisors is an integer number (2320243389).

Almost surely, 2^4640486777 is an apocalyptic number.

It is an amenable number.

4640486777 is a deficient number, since it is larger than the sum of its proper divisors (1).

4640486777 is an equidigital number, since it uses as much as digits as its factorization.

4640486777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6322176, while the sum is 53.

The square root of 4640486777 is about 68121.1184362089. The cubic root of 4640486777 is about 1667.9685072131.

The spelling of 4640486777 in words is "four billion, six hundred forty million, four hundred eighty-six thousand, seven hundred seventy-seven".