2478669 has 8 divisors (see below), whose sum is σ = 3319680. Its totient is φ = 1645056.

The previous prime is 2478661. The next prime is 2478673. The reversal of 2478669 is 9668742.

2478669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2478669 - 2³ = 2478661 is a prime.

It is a super-2 number, since 2×2478669² = 12287600023122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2478669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478661) 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 in 7 ways as a sum of consecutive naturals, for example, 1012 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (414960).

2^2478669 is an apocalyptic number.

It is an amenable number.

2478669 is a deficient number, since it is larger than the sum of its proper divisors (841011).

2478669 is a wasteful number, since it uses less digits than its factorization.

2478669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699.

The product of its digits is 145152, while the sum is 42.

The square root of 2478669 is about 1574.3789251638. The cubic root of 2478669 is about 135.3337694556. Note that the first 3 decimals are identical.

The spelling of 2478669 in words is "two million, four hundred seventy-eight thousand, six hundred sixty-nine".