2478877 has 2 divisors, whose sum is σ = 2478878. Its totient is φ = 2478876.

The previous prime is 2478809. The next prime is 2478899. The reversal of 2478877 is 7788742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1490841 + 988036 = 1221^2 + 994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2478877 is a prime.

It is a super-2 number, since 2×2478877² = 12289662362258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2478677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239438 + 1239439.

It is an arithmetic number, because the mean of its divisors is an integer number (1239439).

2^2478877 is an apocalyptic number.

It is an amenable number.

2478877 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478877 is an equidigital number, since it uses as much as digits as its factorization.

2478877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 175616, while the sum is 43.

The square root of 2478877 is about 1574.4449815729. Note that the first 3 decimals coincide. The cubic root of 2478877 is about 135.3375549062.

The spelling of 2478877 in words is "two million, four hundred seventy-eight thousand, eight hundred seventy-seven".