6641531362 has 4 divisors (see below), whose sum is σ = 9962297046. Its totient is φ = 3320765680.

The previous prime is 6641531341. The next prime is 6641531363. The reversal of 6641531362 is 2631351466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2631351466 = 2 ⋅1315675733.

It can be written as a sum of positive squares in only one way, i.e., 3638381761 + 3003149601 = 60319^2 + 54801^2 .

It is not an unprimeable number, because it can be changed into a prime (6641531363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660382839 + ... + 1660382842.

Almost surely, 2^6641531362 is an apocalyptic number.

6641531362 is a deficient number, since it is larger than the sum of its proper divisors (3320765684).

6641531362 is a wasteful number, since it uses less digits than its factorization.

6641531362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320765683.

The product of its digits is 77760, while the sum is 37.

The square root of 6641531362 is about 81495.5910586579. The cubic root of 6641531362 is about 1879.7037561356.

The spelling of 6641531362 in words is "six billion, six hundred forty-one million, five hundred thirty-one thousand, three hundred sixty-two".