662577677661 has 16 divisors (see below), whose sum is σ = 892061241344. Its totient is φ = 437406737904.

The previous prime is 662577677651. The next prime is 662577677677. The reversal of 662577677661 is 166776775266.

It is not a de Polignac number, because 662577677661 - 2⁷ = 662577677533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 662577677592 and 662577677601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662577677621) 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, 7336200 + ... + 7425966.

It is an arithmetic number, because the mean of its divisors is an integer number (55753827584).

Almost surely, 2^662577677661 is an apocalyptic number.

It is an amenable number.

662577677661 is a deficient number, since it is larger than the sum of its proper divisors (229483563683).

662577677661 is a wasteful number, since it uses less digits than its factorization.

662577677661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113760.

The product of its digits is 186701760, while the sum is 66.

The spelling of 662577677661 in words is "six hundred sixty-two billion, five hundred seventy-seven million, six hundred seventy-seven thousand, six hundred sixty-one".