2666997 has 12 divisors (see below), whose sum is σ = 3956940. Its totient is φ = 1729728.

The previous prime is 2666987. The next prime is 2667019. The reversal of 2666997 is 7996662.

It can be written as a sum of positive squares in 2 ways, for example, as 2090916 + 576081 = 1446^2 + 759^2 .

It is not a de Polignac number, because 2666997 - 2¹⁰ = 2665973 is a prime.

It is a super-2 number, since 2×2666997² = 14225745996018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666947) 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, 3672 + ... + 4337.

It is an arithmetic number, because the mean of its divisors is an integer number (329745).

2^2666997 is an apocalyptic number.

It is an amenable number.

2666997 is a deficient number, since it is larger than the sum of its proper divisors (1289943).

2666997 is a wasteful number, since it uses less digits than its factorization.

2666997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052 (or 8049 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 2666997 is about 1633.0943022373. The cubic root of 2666997 is about 138.6779806422.

It can be divided in two parts, 2666 and 997, that added together give a palindrome (3663).

The spelling of 2666997 in words is "two million, six hundred sixty-six thousand, nine hundred ninety-seven".