2666106540 has 36 divisors (see below), whose sum is σ = 8087190384. Its totient is φ = 710961696.

The previous prime is 2666106539. The next prime is 2666106551. The reversal of 2666106540 is 456016662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2666106495 and 2666106504.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7405672 + ... + 7406031.

Almost surely, 2^2666106540 is an apocalyptic number.

2666106540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666106540 is an abundant number, since it is smaller than the sum of its proper divisors (5421083844).

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

2666106540 is a wasteful number, since it uses less digits than its factorization.

2666106540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14811718 (or 14811713 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 2666106540 is about 51634.3542614798. The cubic root of 2666106540 is about 1386.6254493676.

The spelling of 2666106540 in words is "two billion, six hundred sixty-six million, one hundred six thousand, five hundred forty".