3655874 has 4 divisors (see below), whose sum is σ = 5483814. Its totient is φ = 1827936.

The previous prime is 3655849. The next prime is 3655877. The reversal of 3655874 is 4785563.

3655874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4785563 = 31 ⋅154373.

It can be written as a sum of positive squares in only one way, i.e., 3265249 + 390625 = 1807^2 + 625^2 .

It is not an unprimeable number, because it can be changed into a prime (3655877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913967 + ... + 913970.

Almost surely, 2^3655874 is an apocalyptic number.

3655874 is a deficient number, since it is larger than the sum of its proper divisors (1827940).

3655874 is a wasteful number, since it uses less digits than its factorization.

3655874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827939.

The product of its digits is 100800, while the sum is 38.

The square root of 3655874 is about 1912.0339955137. The cubic root of 3655874 is about 154.0507225958.

The spelling of 3655874 in words is "three million, six hundred fifty-five thousand, eight hundred seventy-four".