6661749304 has 16 divisors (see below), whose sum is σ = 14275177200. Its totient is φ = 2855035392.

The previous prime is 6661749293. The next prime is 6661749349. The reversal of 6661749304 is 4039471666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59479849 + ... + 59479960.

It is an arithmetic number, because the mean of its divisors is an integer number (892198575).

Almost surely, 2^6661749304 is an apocalyptic number.

It is an amenable number.

6661749304 is an abundant number, since it is smaller than the sum of its proper divisors (7613427896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6661749304 is a wasteful number, since it uses less digits than its factorization.

6661749304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118959822 (or 118959818 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 6661749304 is about 81619.5399643982. The cubic root of 6661749304 is about 1881.6092023984.

It can be divided in two parts, 66617 and 49304, that added together give a triangular number (115921 = T₄₈₁).

The spelling of 6661749304 in words is "six billion, six hundred sixty-one million, seven hundred forty-nine thousand, three hundred four".