3965678 has 4 divisors (see below), whose sum is σ = 5948520. Its totient is φ = 1982838.

The previous prime is 3965659. The next prime is 3965681. The reversal of 3965678 is 8765693.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991418 + ... + 991421.

It is an arithmetic number, because the mean of its divisors is an integer number (1487130).

Almost surely, 2^3965678 is an apocalyptic number.

3965678 is a deficient number, since it is larger than the sum of its proper divisors (1982842).

3965678 is a wasteful number, since it uses less digits than its factorization.

3965678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982841.

The product of its digits is 272160, while the sum is 44.

The square root of 3965678 is about 1991.4010143615. The cubic root of 3965678 is about 158.2847772315.

The spelling of 3965678 in words is "three million, nine hundred sixty-five thousand, six hundred seventy-eight".