662745840877 has 4 divisors (see below), whose sum is σ = 671824551100. Its totient is φ = 653667130656.

The previous prime is 662745840863. The next prime is 662745840899. The reversal of 662745840877 is 778048547266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 580005619561 + 82740221316 = 761581^2 + 287646^2 .

It is a cyclic number.

It is not a de Polignac number, because 662745840877 - 2¹⁹ = 662745316589 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 (662745840377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4539355002 + ... + 4539355147.

It is an arithmetic number, because the mean of its divisors is an integer number (167956137775).

Almost surely, 2^662745840877 is an apocalyptic number.

It is an amenable number.

662745840877 is a deficient number, since it is larger than the sum of its proper divisors (9078710223).

662745840877 is an equidigital number, since it uses as much as digits as its factorization.

662745840877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9078710222.

The product of its (nonzero) digits is 126443520, while the sum is 64.

The spelling of 662745840877 in words is "six hundred sixty-two billion, seven hundred forty-five million, eight hundred forty thousand, eight hundred seventy-seven".