677120663993 has 2 divisors, whose sum is σ = 677120663994. Its totient is φ = 677120663992.

The previous prime is 677120663969. The next prime is 677120664001. The reversal of 677120663993 is 399366021776.

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., 651760738489 + 25359925504 = 807317^2 + 159248^2 .

It is a cyclic number.

It is not a de Polignac number, because 677120663993 - 2¹⁰ = 677120662969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (677120663893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338560331996 + 338560331997.

It is an arithmetic number, because the mean of its divisors is an integer number (338560331997).

Almost surely, 2^677120663993 is an apocalyptic number.

It is an amenable number.

677120663993 is a deficient number, since it is larger than the sum of its proper divisors (1).

677120663993 is an equidigital number, since it uses as much as digits as its factorization.

677120663993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15431472, while the sum is 59.

The spelling of 677120663993 in words is "six hundred seventy-seven billion, one hundred twenty million, six hundred sixty-three thousand, nine hundred ninety-three".