6609642012 has 24 divisors (see below), whose sum is σ = 17136109200. Its totient is φ = 2203213968.

The previous prime is 6609641999. The next prime is 6609642023. The reversal of 6609642012 is 2102469066.

6609642012 is a `hidden beast` number, since 6 + 6 + 0 + 9 + 642 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30600087 + ... + 30600302.

It is an arithmetic number, because the mean of its divisors is an integer number (714004550).

Almost surely, 2^6609642012 is an apocalyptic number.

It is an amenable number.

6609642012 is an abundant number, since it is smaller than the sum of its proper divisors (10526467188).

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

6609642012 is a wasteful number, since it uses less digits than its factorization.

6609642012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61200402 (or 61200394 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 6609642012 is about 81299.7048703130. The cubic root of 6609642012 is about 1876.6904588214.

It can be divided in two parts, 660964 and 2012, that added together give a triangular number (662976 = T₁₁₅₁).

The spelling of 6609642012 in words is "six billion, six hundred nine million, six hundred forty-two thousand, twelve".