6945390 has 24 divisors (see below), whose sum is σ = 18058248. Its totient is φ = 1852080.

The previous prime is 6945361. The next prime is 6945397. The reversal of 6945390 is 935496.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6945397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38496 + ... + 38675.

It is an arithmetic number, because the mean of its divisors is an integer number (752427).

Almost surely, 2^6945390 is an apocalyptic number.

6945390 is an abundant number, since it is smaller than the sum of its proper divisors (11112858).

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

6945390 is a wasteful number, since it uses less digits than its factorization.

6945390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77184 (or 77181 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 6945390 is about 2635.4107839197. The cubic root of 6945390 is about 190.7943658265.

It can be divided in two parts, 694 and 5390, that added together give a square (6084 = 78²).

The spelling of 6945390 in words is "six million, nine hundred forty-five thousand, three hundred ninety".