6664078 has 4 divisors (see below), whose sum is σ = 9996120. Its totient is φ = 3332038.

The previous prime is 6664069. The next prime is 6664087. The reversal of 6664078 is 8704666.

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

It is an interprime number because it is at equal distance from previous prime (6664069) and next prime (6664087).

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, 1666018 + ... + 1666021.

It is an arithmetic number, because the mean of its divisors is an integer number (2499030).

Almost surely, 2^6664078 is an apocalyptic number.

6664078 is a deficient number, since it is larger than the sum of its proper divisors (3332042).

6664078 is a wasteful number, since it uses less digits than its factorization.

6664078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332041.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 6664078 is about 2581.4875556547. The cubic root of 6664078 is about 188.1828423365.

The spelling of 6664078 in words is "six million, six hundred sixty-four thousand, seventy-eight".