3778487 has 4 divisors (see below), whose sum is σ = 3785376. Its totient is φ = 3771600.

The previous prime is 3778469. The next prime is 3778499. The reversal of 3778487 is 7848773.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3778487 - 2¹⁰ = 3777463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2543 + ... + 3744.

It is an arithmetic number, because the mean of its divisors is an integer number (946344).

Almost surely, 2^3778487 is an apocalyptic number.

3778487 is a deficient number, since it is larger than the sum of its proper divisors (6889).

3778487 is an equidigital number, since it uses as much as digits as its factorization.

3778487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6888.

The product of its digits is 263424, while the sum is 44.

The square root of 3778487 is about 1943.8330689645. The cubic root of 3778487 is about 155.7540365688.

The spelling of 3778487 in words is "three million, seven hundred seventy-eight thousand, four hundred eighty-seven".