2665455 has 16 divisors (see below), whose sum is σ = 4593120. Its totient is φ = 1312128.

The previous prime is 2665433. The next prime is 2665459. The reversal of 2665455 is 5545662.

It is a happy number.

It is not a de Polignac number, because 2665455 - 2⁶ = 2665391 is a prime.

2665455 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665459) 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, 6640 + ... + 7029.

It is an arithmetic number, because the mean of its divisors is an integer number (287070).

2^2665455 is an apocalyptic number.

2665455 is a deficient number, since it is larger than the sum of its proper divisors (1927665).

2665455 is a wasteful number, since it uses less digits than its factorization.

2665455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13690.

The product of its digits is 36000, while the sum is 33.

The square root of 2665455 is about 1632.6221240691. The cubic root of 2665455 is about 138.6512486196.

The spelling of 2665455 in words is "two million, six hundred sixty-five thousand, four hundred fifty-five".