2665426 has 4 divisors (see below), whose sum is σ = 3998142. Its totient is φ = 1332712.

The previous prime is 2665409. The next prime is 2665427. The reversal of 2665426 is 6245662.

2665426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2576025 + 89401 = 1605^2 + 299^2 .

It is a super-2 number, since 2×2665426² = 14208991522952, which contains 22 as substring.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666355 + ... + 666358.

2^2665426 is an apocalyptic number.

2665426 is a deficient number, since it is larger than the sum of its proper divisors (1332716).

2665426 is a wasteful number, since it uses less digits than its factorization.

2665426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332715.

The product of its digits is 17280, while the sum is 31.

The square root of 2665426 is about 1632.6132426267. The cubic root of 2665426 is about 138.6507457786.

The spelling of 2665426 in words is "two million, six hundred sixty-five thousand, four hundred twenty-six".