6602611666 has 8 divisors (see below), whose sum is σ = 11318762880. Its totient is φ = 2829690708.

The previous prime is 6602611661. The next prime is 6602611709. The reversal of 6602611666 is 6661162066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6602611661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235807546 + ... + 235807573.

It is an arithmetic number, because the mean of its divisors is an integer number (1414845360).

Almost surely, 2^6602611666 is an apocalyptic number.

6602611666 is a deficient number, since it is larger than the sum of its proper divisors (4716151214).

6602611666 is a wasteful number, since it uses less digits than its factorization.

6602611666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471615128.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 6602611666 is about 81256.4561496500. The cubic root of 6602611666 is about 1876.0248421431.

The spelling of 6602611666 in words is "six billion, six hundred two million, six hundred eleven thousand, six hundred sixty-six".