670437777377 has 2 divisors, whose sum is σ = 670437777378. Its totient is φ = 670437777376.

The previous prime is 670437777349. The next prime is 670437777403. The reversal of 670437777377 is 773777734076.

670437777377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373814851216 + 296622926161 = 611404^2 + 544631^2 .

It is a cyclic number.

It is not a de Polignac number, because 670437777377 - 2¹⁰ = 670437776353 is a prime.

It is not a weakly prime, because it can be changed into another prime (670437777277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335218888688 + 335218888689.

It is an arithmetic number, because the mean of its divisors is an integer number (335218888689).

Almost surely, 2^670437777377 is an apocalyptic number.

It is an amenable number.

670437777377 is a deficient number, since it is larger than the sum of its proper divisors (1).

670437777377 is an equidigital number, since it uses as much as digits as its factorization.

670437777377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 177885288, while the sum is 65.

The spelling of 670437777377 in words is "six hundred seventy billion, four hundred thirty-seven million, seven hundred seventy-seven thousand, three hundred seventy-seven".