6940819 has 8 divisors (see below), whose sum is σ = 7211520. Its totient is φ = 6675336.

The previous prime is 6940783. The next prime is 6940823. The reversal of 6940819 is 9180496.

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

It is a cyclic number.

It is not a de Polignac number, because 6940819 - 2⁷ = 6940691 is a prime.

It is a super-2 number, since 2×6940819² = 96349936781522, which contains 22 as substring.

It is a Duffinian number.

6940819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6940919) 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, 1522 + ... + 4024.

It is an arithmetic number, because the mean of its divisors is an integer number (901440).

Almost surely, 2^6940819 is an apocalyptic number.

6940819 is a deficient number, since it is larger than the sum of its proper divisors (270701).

6940819 is a wasteful number, since it uses less digits than its factorization.

6940819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 6940819 is about 2634.5434139524. The cubic root of 6940819 is about 190.7525005298.

The spelling of 6940819 in words is "six million, nine hundred forty thousand, eight hundred nineteen".