6940373477 has 2 divisors, whose sum is σ = 6940373478. Its totient is φ = 6940373476.

The previous prime is 6940373423. The next prime is 6940373507. The reversal of 6940373477 is 7743730496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6463999201 + 476374276 = 80399^2 + 21826^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6940373477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6940370477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3470186738 + 3470186739.

It is an arithmetic number, because the mean of its divisors is an integer number (3470186739).

Almost surely, 2^6940373477 is an apocalyptic number.

It is an amenable number.

6940373477 is a deficient number, since it is larger than the sum of its proper divisors (1).

6940373477 is an equidigital number, since it uses as much as digits as its factorization.

6940373477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2667168, while the sum is 50.

The square root of 6940373477 is about 83308.9039478974. The cubic root of 6940373477 is about 1907.4841904963.

The spelling of 6940373477 in words is "six billion, nine hundred forty million, three hundred seventy-three thousand, four hundred seventy-seven".