2478717 has 12 divisors (see below), whose sum is σ = 3704220. Its totient is φ = 1595328.

The previous prime is 2478713. The next prime is 2478727. The reversal of 2478717 is 7178742.

It can be written as a sum of positive squares in 2 ways, for example, as 599076 + 1879641 = 774^2 + 1371^2 .

It is not a de Polignac number, because 2478717 - 2² = 2478713 is a prime.

It is a super-2 number, since 2×2478717² = 12288075932178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4488 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (308685).

2^2478717 is an apocalyptic number.

It is an amenable number.

2478717 is a deficient number, since it is larger than the sum of its proper divisors (1225503).

2478717 is a wasteful number, since it uses less digits than its factorization.

2478717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9532 (or 9529 counting only the distinct ones).

The product of its digits is 21952, while the sum is 36.

The square root of 2478717 is about 1574.3941691965. The cubic root of 2478717 is about 135.3346430399.

The spelling of 2478717 in words is "two million, four hundred seventy-eight thousand, seven hundred seventeen".