6940625 has 12 divisors (see below), whose sum is σ = 8679132. Its totient is φ = 5550000.

The previous prime is 6940589. The next prime is 6940639. The reversal of 6940625 is 5260496.

It can be written as a sum of positive squares in 6 ways, for example, as 5216656 + 1723969 = 2284^2 + 1313^2 .

It is not a de Polignac number, because 6940625 - 2⁶ = 6940561 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6940591 and 6940600.

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, 2015 + ... + 4235.

It is an arithmetic number, because the mean of its divisors is an integer number (723261).

Almost surely, 2^6940625 is an apocalyptic number.

It is an amenable number.

6940625 is a deficient number, since it is larger than the sum of its proper divisors (1738507).

6940625 is an frugal number, since it uses more digits than its factorization.

6940625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 6940625 is about 2634.5065951711. The cubic root of 6940625 is about 190.7507232981.

The spelling of 6940625 in words is "six million, nine hundred forty thousand, six hundred twenty-five".