2945678677 has 2 divisors, whose sum is σ = 2945678678. Its totient is φ = 2945678676.

The previous prime is 2945678639. The next prime is 2945678711. The reversal of 2945678677 is 7768765492.

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., 2876605956 + 69072721 = 53634^2 + 8311^2 .

It is a cyclic number.

It is not a de Polignac number, because 2945678677 - 2³¹ = 798195029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2945678627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1472839338 + 1472839339.

It is an arithmetic number, because the mean of its divisors is an integer number (1472839339).

Almost surely, 2^2945678677 is an apocalyptic number.

It is an amenable number.

2945678677 is a deficient number, since it is larger than the sum of its proper divisors (1).

2945678677 is an equidigital number, since it uses as much as digits as its factorization.

2945678677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 61.

The square root of 2945678677 is about 54274.1068742729. The cubic root of 2945678677 is about 1433.4915051635.

The spelling of 2945678677 in words is "two billion, nine hundred forty-five million, six hundred seventy-eight thousand, six hundred seventy-seven".