6661603070 has 16 divisors (see below), whose sum is σ = 11991926448. Its totient is φ = 2664409920.

The previous prime is 6661603049. The next prime is 6661603087. The reversal of 6661603070 is 703061666.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6661603070.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137837 + ... + 179783.

It is an arithmetic number, because the mean of its divisors is an integer number (749495403).

Almost surely, 2^6661603070 is an apocalyptic number.

6661603070 is a deficient number, since it is larger than the sum of its proper divisors (5330323378).

6661603070 is a wasteful number, since it uses less digits than its factorization.

6661603070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57835.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 6661603070 is about 81618.6441323305. The cubic root of 6661603070 is about 1881.5954343803.

The spelling of 6661603070 in words is "six billion, six hundred sixty-one million, six hundred three thousand, seventy".