6940621 has 8 divisors (see below), whose sum is σ = 7265024. Its totient is φ = 6622560.

The previous prime is 6940589. The next prime is 6940639. The reversal of 6940621 is 1260496.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6940621 - 2⁵ = 6940589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6940621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6940651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730 + ... + 3796.

It is an arithmetic number, because the mean of its divisors is an integer number (908128).

Almost surely, 2^6940621 is an apocalyptic number.

It is an amenable number.

6940621 is a deficient number, since it is larger than the sum of its proper divisors (324403).

6940621 is a wasteful number, since it uses less digits than its factorization.

6940621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 6940621 is about 2634.5058360156. The cubic root of 6940621 is about 190.7506866538.

The spelling of 6940621 in words is "six million, nine hundred forty thousand, six hundred twenty-one".