7400006777 has 2 divisors, whose sum is σ = 7400006778. Its totient is φ = 7400006776.

The previous prime is 7400006773. The next prime is 7400006797. The reversal of 7400006777 is 7776000047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3716609296 + 3683397481 = 60964^2 + 60691^2 .

It is an emirp because it is prime and its reverse (7776000047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7400006777 - 2² = 7400006773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7400006777.

It is not a weakly prime, because it can be changed into another prime (7400006773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3700003388 + 3700003389.

It is an arithmetic number, because the mean of its divisors is an integer number (3700003389).

Almost surely, 2^7400006777 is an apocalyptic number.

It is an amenable number.

7400006777 is a deficient number, since it is larger than the sum of its proper divisors (1).

7400006777 is an equidigital number, since it uses as much as digits as its factorization.

7400006777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57624, while the sum is 38.

The square root of 7400006777 is about 86023.2920609296. The cubic root of 7400006777 is about 1948.6957552532.

The spelling of 7400006777 in words is "seven billion, four hundred million, six thousand, seven hundred seventy-seven".