7700940077 has 2 divisors, whose sum is σ = 7700940078. Its totient is φ = 7700940076.

The previous prime is 7700940061. The next prime is 7700940089. The reversal of 7700940077 is 7700490077.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7700764516 + 175561 = 87754^2 + 419^2 .

It is a cyclic number.

It is not a de Polignac number, because 7700940077 - 2⁴ = 7700940061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7700940097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3850470038 + 3850470039.

It is an arithmetic number, because the mean of its divisors is an integer number (3850470039).

Almost surely, 2^7700940077 is an apocalyptic number.

It is an amenable number.

7700940077 is a deficient number, since it is larger than the sum of its proper divisors (1).

7700940077 is an equidigital number, since it uses as much as digits as its factorization.

7700940077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86436, while the sum is 41.

The square root of 7700940077 is about 87755.0002962794. Note that the first 3 decimals coincide. The cubic root of 7700940077 is about 1974.7611805016.

The spelling of 7700940077 in words is "seven billion, seven hundred million, nine hundred forty thousand, seventy-seven".