648727802 has 16 divisors (see below), whose sum is σ = 997817832. Its totient is φ = 316216320.

The previous prime is 648727801. The next prime is 648727829. The reversal of 648727802 is 208727846.

It can be written as a sum of positive squares in 4 ways, for example, as 44502241 + 604225561 = 6671^2 + 24581^2 .

It is a super-2 number, since 2×648727802² = 841695522175502408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (648727801) 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 7 ways as a sum of consecutive naturals, for example, 9743 + ... + 37314.

Almost surely, 2^648727802 is an apocalyptic number.

648727802 is a deficient number, since it is larger than the sum of its proper divisors (349090030).

648727802 is a wasteful number, since it uses less digits than its factorization.

648727802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47233.

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 648727802 is about 25470.1354923762. The cubic root of 648727802 is about 865.6735938470.

Adding to 648727802 its sum of digits (44), we get a palindrome (648727846).

The spelling of 648727802 in words is "six hundred forty-eight million, seven hundred twenty-seven thousand, eight hundred two".