6820761 has 8 divisors (see below), whose sum is σ = 9111520. Its totient is φ = 4538592.

The previous prime is 6820741. The next prime is 6820769. The reversal of 6820761 is 1670286.

It is a happy number.

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

It is not a de Polignac number, because 6820761 - 2⁷ = 6820633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6820769) 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, 21 + ... + 3693.

It is an arithmetic number, because the mean of its divisors is an integer number (1138940).

Almost surely, 2^6820761 is an apocalyptic number.

It is an amenable number.

6820761 is a deficient number, since it is larger than the sum of its proper divisors (2290759).

6820761 is a wasteful number, since it uses less digits than its factorization.

6820761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 6820761 is about 2611.6586683562. The cubic root of 6820761 is about 189.6462577852.

The spelling of 6820761 in words is "six million, eight hundred twenty thousand, seven hundred sixty-one".