3778663 has 8 divisors (see below), whose sum is σ = 4545920. Its totient is φ = 3068280.

The previous prime is 3778661. The next prime is 3778667. The reversal of 3778663 is 3668773.

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

It is a cyclic number.

It is not a de Polignac number, because 3778663 - 2¹ = 3778661 is a prime.

It is a Duffinian number.

3778663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778661) 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, 14073 + ... + 14338.

It is an arithmetic number, because the mean of its divisors is an integer number (568240).

Almost surely, 2^3778663 is an apocalyptic number.

3778663 is a deficient number, since it is larger than the sum of its proper divisors (767257).

3778663 is a wasteful number, since it uses less digits than its factorization.

3778663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28437.

The product of its digits is 127008, while the sum is 40.

The square root of 3778663 is about 1943.8783398145. The cubic root of 3778663 is about 155.7564548458.

The spelling of 3778663 in words is "three million, seven hundred seventy-eight thousand, six hundred sixty-three".