677007698729 has 2 divisors, whose sum is σ = 677007698730. Its totient is φ = 677007698728.

The previous prime is 677007698701. The next prime is 677007698767. The reversal of 677007698729 is 927896700776.

677007698729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 673305584704 + 3702114025 = 820552^2 + 60845^2 .

It is a cyclic number.

It is not a de Polignac number, because 677007698729 - 2¹⁶ = 677007633193 is a prime.

It is not a weakly prime, because it can be changed into another prime (677007698779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338503849364 + 338503849365.

It is an arithmetic number, because the mean of its divisors is an integer number (338503849365).

Almost surely, 2^677007698729 is an apocalyptic number.

It is an amenable number.

677007698729 is a deficient number, since it is larger than the sum of its proper divisors (1).

677007698729 is an equidigital number, since it uses as much as digits as its factorization.

677007698729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112021056, while the sum is 68.

The spelling of 677007698729 in words is "six hundred seventy-seven billion, seven million, six hundred ninety-eight thousand, seven hundred twenty-nine".