677061065221 has 16 divisors (see below), whose sum is σ = 683662187520. Its totient is φ = 670495006720.

The previous prime is 677061065209. The next prime is 677061065231. The reversal of 677061065221 is 122560160776.

It is a cyclic number.

It is not a de Polignac number, because 677061065221 - 2⁵ = 677061065189 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 (677061065231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114811545 + ... + 114817441.

It is an arithmetic number, because the mean of its divisors is an integer number (42728886720).

Almost surely, 2^677061065221 is an apocalyptic number.

It is an amenable number.

677061065221 is a deficient number, since it is larger than the sum of its proper divisors (6601122299).

677061065221 is a wasteful number, since it uses less digits than its factorization.

677061065221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8684.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 677061065221 in words is "six hundred seventy-seven billion, sixty-one million, sixty-five thousand, two hundred twenty-one".