2665429 has 4 divisors (see below), whose sum is σ = 2870476. Its totient is φ = 2460384.

The previous prime is 2665427. The next prime is 2665433. The reversal of 2665429 is 9245662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9245662 = 2 ⋅4622831.

It can be written as a sum of positive squares in 2 ways, for example, as 1695204 + 970225 = 1302^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 2665429 - 2¹ = 2665427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2665394 and 2665403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102504 + ... + 102529.

It is an arithmetic number, because the mean of its divisors is an integer number (717619).

2^2665429 is an apocalyptic number.

It is an amenable number.

2665429 is a deficient number, since it is larger than the sum of its proper divisors (205047).

2665429 is a wasteful number, since it uses less digits than its factorization.

2665429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205046.

The product of its digits is 25920, while the sum is 34.

The square root of 2665429 is about 1632.6141613988. The cubic root of 2665429 is about 138.6507977968.

The spelling of 2665429 in words is "two million, six hundred sixty-five thousand, four hundred twenty-nine".