2666500 has 24 divisors (see below), whose sum is σ = 5824728. Its totient is φ = 1066400.

The previous prime is 2666491. The next prime is 2666507. The reversal of 2666500 is 56662.

It can be written as a sum of positive squares in 4 ways, for example, as 61504 + 2604996 = 248^2 + 1614^2 .

It is a super-2 number, since 2×2666500² = 14220444500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (2666507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167 + ... + 3166.

It is an arithmetic number, because the mean of its divisors is an integer number (242697).

2^2666500 is an apocalyptic number.

2666500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666500 is an abundant number, since it is smaller than the sum of its proper divisors (3158228).

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

2666500 is a wasteful number, since it uses less digits than its factorization.

2666500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352 (or 5340 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2666500 is about 1632.9421300218. The cubic root of 2666500 is about 138.6693658046.

The spelling of 2666500 in words is "two million, six hundred sixty-six thousand, five hundred".