677445101 has 2 divisors, whose sum is σ = 677445102. Its totient is φ = 677445100.

The previous prime is 677445079. The next prime is 677445143. The reversal of 677445101 is 101544776.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 650301001 + 27144100 = 25501^2 + 5210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677445101 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677445401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338722550 + 338722551.

It is an arithmetic number, because the mean of its divisors is an integer number (338722551).

Almost surely, 2^677445101 is an apocalyptic number.

It is an amenable number.

677445101 is a deficient number, since it is larger than the sum of its proper divisors (1).

677445101 is an equidigital number, since it uses as much as digits as its factorization.

677445101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 677445101 is about 26027.7755676508. The cubic root of 677445101 is about 878.2632330621.

Adding to 677445101 its reverse (101544776), we get a palindrome (778989877).

The spelling of 677445101 in words is "six hundred seventy-seven million, four hundred forty-five thousand, one hundred one".