6606420642 has 16 divisors (see below), whose sum is σ = 14680934880. Its totient is φ = 2202140196.

The previous prime is 6606420641. The next prime is 6606420659. The reversal of 6606420642 is 2460246066.

6606420642 is a `hidden beast` number, since 6 + 6 + 0 + 6 + 4 + 2 + 0 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6606420597 and 6606420606.

It is not an unprimeable number, because it can be changed into a prime (6606420641) 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, 61170508 + ... + 61170615.

It is an arithmetic number, because the mean of its divisors is an integer number (917558430).

Almost surely, 2^6606420642 is an apocalyptic number.

6606420642 is an abundant number, since it is smaller than the sum of its proper divisors (8074514238).

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

6606420642 is a wasteful number, since it uses less digits than its factorization.

6606420642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122341134 (or 122341128 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 6606420642 is about 81279.8907602612. The cubic root of 6606420642 is about 1876.3855256777.

The spelling of 6606420642 in words is "six billion, six hundred six million, four hundred twenty thousand, six hundred forty-two".