2666701605 has 16 divisors (see below), whose sum is σ = 4318130880. Its totient is φ = 1405104768.

The previous prime is 2666701603. The next prime is 2666701613. The reversal of 2666701605 is 5061076662.

It is not a de Polignac number, because 2666701605 - 2¹ = 2666701603 is a prime.

It is a super-2 number, since 2×2666701605² = 14222594900219152050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666701603) 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 15 ways as a sum of consecutive naturals, for example, 1069720 + ... + 1072209.

It is an arithmetic number, because the mean of its divisors is an integer number (269883180).

Almost surely, 2^2666701605 is an apocalyptic number.

It is an amenable number.

2666701605 is a deficient number, since it is larger than the sum of its proper divisors (1651429275).

2666701605 is a wasteful number, since it uses less digits than its factorization.

2666701605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142020.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 2666701605 is about 51640.1162372820. The cubic root of 2666701605 is about 1386.7286048967.

The spelling of 2666701605 in words is "two billion, six hundred sixty-six million, seven hundred one thousand, six hundred five".