677440913 has 2 divisors, whose sum is σ = 677440914. Its totient is φ = 677440912.

The previous prime is 677440849. The next prime is 677440927. The reversal of 677440913 is 319044776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 614444944 + 62995969 = 24788^2 + 7937^2 .

It is a cyclic number.

It is not a de Polignac number, because 677440913 - 2⁶ = 677440849 is a prime.

It is a super-3 number, since 3×677440913³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (677440993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338720456 + 338720457.

It is an arithmetic number, because the mean of its divisors is an integer number (338720457).

Almost surely, 2^677440913 is an apocalyptic number.

It is an amenable number.

677440913 is a deficient number, since it is larger than the sum of its proper divisors (1).

677440913 is an equidigital number, since it uses as much as digits as its factorization.

677440913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 677440913 is about 26027.6951150116. The cubic root of 677440913 is about 878.2614232358.

The spelling of 677440913 in words is "six hundred seventy-seven million, four hundred forty thousand, nine hundred thirteen".