677666444101 has 16 divisors (see below), whose sum is σ = 690399763200. Its totient is φ = 665049547008.

The previous prime is 677666444089. The next prime is 677666444129. The reversal of 677666444101 is 101444666776.

It is a cyclic number.

It is not a de Polignac number, because 677666444101 - 2³⁷ = 540227490629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677666444501) 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 in 15 ways as a sum of consecutive naturals, for example, 77772121 + ... + 77780833.

It is an arithmetic number, because the mean of its divisors is an integer number (43149985200).

Almost surely, 2^677666444101 is an apocalyptic number.

It is an amenable number.

677666444101 is a deficient number, since it is larger than the sum of its proper divisors (12733319099).

677666444101 is a wasteful number, since it uses less digits than its factorization.

677666444101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15228.

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 677666444101 in words is "six hundred seventy-seven billion, six hundred sixty-six million, four hundred forty-four thousand, one hundred one".