6694428 has 36 divisors (see below), whose sum is σ = 16919448. Its totient is φ = 2059200.

The previous prime is 6694417. The next prime is 6694433. The reversal of 6694428 is 8244966.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378 + ... + 3678.

Almost surely, 2^6694428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6694428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8459724).

6694428 is an abundant number, since it is smaller than the sum of its proper divisors (10225020).

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

6694428 is a wasteful number, since it uses less digits than its factorization.

6694428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334 (or 3319 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 6694428 is about 2587.3592715354. The cubic root of 6694428 is about 188.4680881373.

The spelling of 6694428 in words is "six million, six hundred ninety-four thousand, four hundred twenty-eight".