3978670 has 8 divisors (see below), whose sum is σ = 7161624. Its totient is φ = 1591464.

The previous prime is 3978659. The next prime is 3978671. The reversal of 3978670 is 768793.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198924 + ... + 198943.

It is an arithmetic number, because the mean of its divisors is an integer number (895203).

Almost surely, 2^3978670 is an apocalyptic number.

3978670 is a deficient number, since it is larger than the sum of its proper divisors (3182954).

3978670 is a wasteful number, since it uses less digits than its factorization.

3978670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397874.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 3978670 is about 1994.6603720935. The cubic root of 3978670 is about 158.4574416284.

The spelling of 3978670 in words is "three million, nine hundred seventy-eight thousand, six hundred seventy".