2278487 has 2 divisors, whose sum is σ = 2278488. Its totient is φ = 2278486.

The previous prime is 2278481. The next prime is 2278517. The reversal of 2278487 is 7848722.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2278487 - 2¹⁴ = 2262103 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2278487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139243 + 1139244.

It is an arithmetic number, because the mean of its divisors is an integer number (1139244).

2^2278487 is an apocalyptic number.

2278487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278487 is an equidigital number, since it uses as much as digits as its factorization.

2278487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50176, while the sum is 38.

The square root of 2278487 is about 1509.4657995463. The cubic root of 2278487 is about 131.5877673610.

The spelling of 2278487 in words is "two million, two hundred seventy-eight thousand, four hundred eighty-seven".