6645294 has 32 divisors (see below), whose sum is σ = 14916000. Its totient is φ = 2192832.

The previous prime is 6645293. The next prime is 6645313. The reversal of 6645294 is 4925466.

6645294 is a `hidden beast` number, since 6 + 645 + 2 + 9 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6645293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5322 + ... + 6450.

It is an arithmetic number, because the mean of its divisors is an integer number (466125).

Almost surely, 2^6645294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6645294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7458000).

6645294 is an abundant number, since it is smaller than the sum of its proper divisors (8270706).

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

6645294 is a wasteful number, since it uses less digits than its factorization.

6645294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249 (or 1243 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 6645294 is about 2577.8467758965. The cubic root of 6645294 is about 188.0058659706.

The spelling of 6645294 in words is "six million, six hundred forty-five thousand, two hundred ninety-four".