662898976749 has 6 divisors (see below), whose sum is σ = 957520744206. Its totient is φ = 441932651160.

The previous prime is 662898976721. The next prime is 662898976771. The reversal of 662898976749 is 947679898266.

It can be written as a sum of positive squares in only one way, i.e., 331451215524 + 331447761225 = 575718^2 + 575715^2 .

It is not a de Polignac number, because 662898976749 - 2⁵ = 662898976717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662898966749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36827720922 + ... + 36827720939.

It is an arithmetic number, because the mean of its divisors is an integer number (159586790701).

Almost surely, 2^662898976749 is an apocalyptic number.

It is an amenable number.

662898976749 is a deficient number, since it is larger than the sum of its proper divisors (294621767457).

662898976749 is a wasteful number, since it uses less digits than its factorization.

662898976749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73655441867 (or 73655441864 counting only the distinct ones).

The product of its digits is 3950456832, while the sum is 81.

The spelling of 662898976749 in words is "six hundred sixty-two billion, eight hundred ninety-eight million, nine hundred seventy-six thousand, seven hundred forty-nine".