3778345 has 8 divisors (see below), whose sum is σ = 4544640. Its totient is φ = 3015600.

The previous prime is 3778343. The next prime is 3778391. The reversal of 3778345 is 5438773.

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

It is not a de Polignac number, because 3778345 - 2¹ = 3778343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3778343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3070 + ... + 4120.

It is an arithmetic number, because the mean of its divisors is an integer number (568080).

Almost surely, 2^3778345 is an apocalyptic number.

It is an amenable number.

3778345 is a deficient number, since it is larger than the sum of its proper divisors (766295).

3778345 is a wasteful number, since it uses less digits than its factorization.

3778345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775.

The product of its digits is 70560, while the sum is 37.

The square root of 3778345 is about 1943.7965428511. The cubic root of 3778345 is about 155.7520854042.

The spelling of 3778345 in words is "three million, seven hundred seventy-eight thousand, three hundred forty-five".