2478667 has 8 divisors (see below), whose sum is σ = 2628992. Its totient is φ = 2332800.

The previous prime is 2478661. The next prime is 2478673. The reversal of 2478667 is 7668742.

2478667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2478661) and next prime (2478673).

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

It is a cyclic number.

It is not a de Polignac number, because 2478667 - 2¹⁵ = 2445899 is a prime.

It is a super-2 number, since 2×2478667² = 12287580193778, which contains 22 as substring.

It is a Duffinian 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, 67 + ... + 2227.

It is an arithmetic number, because the mean of its divisors is an integer number (328624).

2^2478667 is an apocalyptic number.

2478667 is a deficient number, since it is larger than the sum of its proper divisors (150325).

2478667 is a wasteful number, since it uses less digits than its factorization.

2478667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229.

The product of its digits is 112896, while the sum is 40.

The square root of 2478667 is about 1574.3782899926. The cubic root of 2478667 is about 135.3337330561. Note that the first 3 decimals are identical.

The spelling of 2478667 in words is "two million, four hundred seventy-eight thousand, six hundred sixty-seven".