2998665 has 24 divisors (see below), whose sum is σ = 5341128. Its totient is φ = 1555200.

The previous prime is 2998663. The next prime is 2998679. The reversal of 2998665 is 5668992.

It can be written as a sum of positive squares in 4 ways, for example, as 335241 + 2663424 = 579^2 + 1632^2 .

It is not a de Polignac number, because 2998665 - 2¹ = 2998663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2998665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2998663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 765 + ... + 2565.

It is an arithmetic number, because the mean of its divisors is an integer number (222547).

2^2998665 is an apocalyptic number.

It is an amenable number.

2998665 is a deficient number, since it is larger than the sum of its proper divisors (2342463).

2998665 is a wasteful number, since it uses less digits than its factorization.

2998665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849 (or 1846 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 2998665 is about 1731.6653833810. The cubic root of 2998665 is about 144.2035604880.

It can be divided in two parts, 2998 and 665, that added together give a palindrome (3663).

The spelling of 2998665 in words is "two million, nine hundred ninety-eight thousand, six hundred sixty-five".