3677978 has 4 divisors (see below), whose sum is σ = 5516970. Its totient is φ = 1838988.

The previous prime is 3677977. The next prime is 3677981. The reversal of 3677978 is 8797763.

3677978 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: 8797763 = 13 ⋅676751.

It can be written as a sum of positive squares in only one way, i.e., 2362369 + 1315609 = 1537^2 + 1147^2 .

It is not an unprimeable number, because it can be changed into a prime (3677977) 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, 919493 + ... + 919496.

Almost surely, 2^3677978 is an apocalyptic number.

3677978 is a deficient number, since it is larger than the sum of its proper divisors (1838992).

3677978 is a wasteful number, since it uses less digits than its factorization.

3677978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838991.

The product of its digits is 444528, while the sum is 47.

The square root of 3677978 is about 1917.8055167300. The cubic root of 3677978 is about 154.3605707527.

The spelling of 3677978 in words is "three million, six hundred seventy-seven thousand, nine hundred seventy-eight".