3745778 has 4 divisors (see below), whose sum is σ = 5618670. Its totient is φ = 1872888.

The previous prime is 3745771. The next prime is 3745783. The reversal of 3745778 is 8775473.

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

It can be written as a sum of positive squares in only one way, i.e., 2393209 + 1352569 = 1547^2 + 1163^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3745771) by changing a digit.

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 as a sum of consecutive naturals, namely, 936443 + ... + 936446.

Almost surely, 2^3745778 is an apocalyptic number.

3745778 is a deficient number, since it is larger than the sum of its proper divisors (1872892).

3745778 is a wasteful number, since it uses less digits than its factorization.

3745778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872891.

The product of its digits is 164640, while the sum is 41.

The square root of 3745778 is about 1935.4012503871. The cubic root of 3745778 is about 155.3032979109.

The spelling of 3745778 in words is "three million, seven hundred forty-five thousand, seven hundred seventy-eight".