6660498361 has 10 divisors (see below), whose sum is σ = 7326518810. Its totient is φ = 6054985200.

The previous prime is 6660498337. The next prime is 6660498371. The reversal of 6660498361 is 1638940666.

It can be written as a sum of positive squares in only one way, i.e., 6377619600 + 282878761 = 79860^2 + 16819^2 .

It is not a de Polignac number, because 6660498361 - 2⁷ = 6660498233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6660498311) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 212820 + ... + 242101.

It is an arithmetic number, because the mean of its divisors is an integer number (732651881).

Almost surely, 2^6660498361 is an apocalyptic number.

It is an amenable number.

6660498361 is a deficient number, since it is larger than the sum of its proper divisors (666020449).

6660498361 is an frugal number, since it uses more digits than its factorization.

6660498361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454965 (or 454932 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 6660498361 is about 81611.8763477473. The cubic root of 6660498361 is about 1881.4914188604.

The spelling of 6660498361 in words is "six billion, six hundred sixty million, four hundred ninety-eight thousand, three hundred sixty-one".