6940581 has 8 divisors (see below), whose sum is σ = 9289344. Its totient is φ = 4609440.

The previous prime is 6940561. The next prime is 6940589. The reversal of 6940581 is 1850496.

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

It is not a de Polignac number, because 6940581 - 2⁹ = 6940069 is a prime.

It is a super-2 number, since 2×6940581² = 96343329235122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6940589) 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, 3456 + ... + 5081.

It is an arithmetic number, because the mean of its divisors is an integer number (1161168).

Almost surely, 2^6940581 is an apocalyptic number.

It is an amenable number.

6940581 is a deficient number, since it is larger than the sum of its proper divisors (2348763).

6940581 is a wasteful number, since it uses less digits than its factorization.

6940581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8811.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 6940581 is about 2634.4982444481. The cubic root of 6940581 is about 190.7503202100.

The spelling of 6940581 in words is "six million, nine hundred forty thousand, five hundred eighty-one".