7776677473 has 2 divisors, whose sum is σ = 7776677474. Its totient is φ = 7776677472.

The previous prime is 7776677459. The next prime is 7776677521. The reversal of 7776677473 is 3747766777.

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., 6312620304 + 1464057169 = 79452^2 + 38263^2 .

It is a cyclic number.

It is not a de Polignac number, because 7776677473 - 2²¹ = 7774580321 is a prime.

It is not a weakly prime, because it can be changed into another prime (7776677423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3888338736 + 3888338737.

It is an arithmetic number, because the mean of its divisors is an integer number (3888338737).

Almost surely, 2^7776677473 is an apocalyptic number.

It is an amenable number.

7776677473 is a deficient number, since it is larger than the sum of its proper divisors (1).

7776677473 is an equidigital number, since it uses as much as digits as its factorization.

7776677473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50824368, while the sum is 61.

The square root of 7776677473 is about 88185.4720064479. The cubic root of 7776677473 is about 1981.2138828141.

The spelling of 7776677473 in words is "seven billion, seven hundred seventy-six million, six hundred seventy-seven thousand, four hundred seventy-three".