3780005 has 16 divisors (see below), whose sum is σ = 4752000. Its totient is φ = 2882880.

The previous prime is 3779929. The next prime is 3780017. The reversal of 3780005 is 5000873.

It is not a de Polignac number, because 3780005 - 2¹² = 3775909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18896 + ... + 19094.

It is an arithmetic number, because the mean of its divisors is an integer number (297000).

Almost surely, 2^3780005 is an apocalyptic number.

It is an amenable number.

3780005 is a deficient number, since it is larger than the sum of its proper divisors (971995).

3780005 is a wasteful number, since it uses less digits than its factorization.

3780005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 3780005 is about 1944.2234953832. The cubic root of 3780005 is about 155.7748917393.

Adding to 3780005 its reverse (5000873), we get a palindrome (8780878).

The spelling of 3780005 in words is "three million, seven hundred eighty thousand, five".