3967578 has 12 divisors (see below), whose sum is σ = 8596458. Its totient is φ = 1322520.

The previous prime is 3967571. The next prime is 3967609. The reversal of 3967578 is 8757693.

It is a happy number.

3967578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3908529 + 59049 = 1977^2 + 243^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3967571) 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 in 5 ways as a sum of consecutive naturals, for example, 110193 + ... + 110228.

Almost surely, 2^3967578 is an apocalyptic number.

3967578 is an abundant number, since it is smaller than the sum of its proper divisors (4628880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3967578 is a wasteful number, since it uses less digits than its factorization.

3967578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220429 (or 220426 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 3967578 is about 1991.8780083128. The cubic root of 3967578 is about 158.3100518554.

The spelling of 3967578 in words is "three million, nine hundred sixty-seven thousand, five hundred seventy-eight".