3613978 has 8 divisors (see below), whose sum is σ = 5547168. Its totient is φ = 1764924.

The previous prime is 3613963. The next prime is 3613991. The reversal of 3613978 is 8793163.

3613978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20926 + ... + 21097.

It is an arithmetic number, because the mean of its divisors is an integer number (693396).

Almost surely, 2^3613978 is an apocalyptic number.

3613978 is a deficient number, since it is larger than the sum of its proper divisors (1933190).

3613978 is a wasteful number, since it uses less digits than its factorization.

3613978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42068.

The product of its digits is 27216, while the sum is 37.

The square root of 3613978 is about 1901.0465538750. The cubic root of 3613978 is about 153.4599909167.

The spelling of 3613978 in words is "three million, six hundred thirteen thousand, nine hundred seventy-eight".