2666612061 has 12 divisors (see below), whose sum is σ = 4078348092. Its totient is φ = 1673168256.

The previous prime is 2666612059. The next prime is 2666612063. The reversal of 2666612061 is 1602166662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2666612059) and next prime (2666612063).

It can be written as a sum of positive squares in 2 ways, for example, as 2484524025 + 182088036 = 49845^2 + 13494^2 .

It is not a de Polignac number, because 2666612061 - 2¹ = 2666612059 is a prime.

It is a super-2 number, since 2×2666612061² = 14221639767741335442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666612063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8714266 + ... + 8714571.

It is an arithmetic number, because the mean of its divisors is an integer number (339862341).

Almost surely, 2^2666612061 is an apocalyptic number.

It is an amenable number.

2666612061 is a deficient number, since it is larger than the sum of its proper divisors (1411736031).

2666612061 is a wasteful number, since it uses less digits than its factorization.

2666612061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17428860 (or 17428857 counting only the distinct ones).

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

The square root of 2666612061 is about 51639.2492296315. The cubic root of 2666612061 is about 1386.7130832730.

The spelling of 2666612061 in words is "two billion, six hundred sixty-six million, six hundred twelve thousand, sixty-one".