6820995 has 32 divisors (see below), whose sum is σ = 12068352. Its totient is φ = 3272192.

The previous prime is 6820993. The next prime is 6820999. The reversal of 6820995 is 5990286.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6820995 - 2¹ = 6820993 is a prime.

6820995 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6820991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5284 + ... + 6446.

It is an arithmetic number, because the mean of its divisors is an integer number (377136).

Almost surely, 2^6820995 is an apocalyptic number.

6820995 is a deficient number, since it is larger than the sum of its proper divisors (5247357).

6820995 is a wasteful number, since it uses less digits than its factorization.

6820995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 6820995 is about 2611.7034670881. The cubic root of 6820995 is about 189.6484264932.

The spelling of 6820995 in words is "six million, eight hundred twenty thousand, nine hundred ninety-five".