2106666562 has 32 divisors (see below), whose sum is σ = 4242801024. Its totient is φ = 757641600.

The previous prime is 2106666509. The next prime is 2106666563. The reversal of 2106666562 is 2656666012.

It is not an unprimeable number, because it can be changed into a prime (2106666563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524139 + ... + 528142.

It is an arithmetic number, because the mean of its divisors is an integer number (132587532).

Almost surely, 2^2106666562 is an apocalyptic number.

2106666562 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2106666562 is an abundant number, since it is smaller than the sum of its proper divisors (2136134462).

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

2106666562 is a wasteful number, since it uses less digits than its factorization.

2106666562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052314.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 2106666562 is about 45898.4374679574. The cubic root of 2106666562 is about 1281.9328225293.

The spelling of 2106666562 in words is "two billion, one hundred six million, six hundred sixty-six thousand, five hundred sixty-two".