3778705 has 16 divisors (see below), whose sum is σ = 5235840. Its totient is φ = 2564352.

The previous prime is 3778681. The next prime is 3778717. The reversal of 3778705 is 5078773.

It is a de Polignac number, because none of the positive numbers 2^k-3778705 is a prime.

It is a super-2 number, since 2×3778705² = 28557222954050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3241 + ... + 4249.

It is an arithmetic number, because the mean of its divisors is an integer number (327240).

Almost surely, 2^3778705 is an apocalyptic number.

3778705 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3778705 is a deficient number, since it is larger than the sum of its proper divisors (1457135).

3778705 is a wasteful number, since it uses less digits than its factorization.

3778705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 3778705 is about 1943.8891429297. The cubic root of 3778705 is about 155.7570319235.

The spelling of 3778705 in words is "three million, seven hundred seventy-eight thousand, seven hundred five".