6722905 has 16 divisors (see below), whose sum is σ = 9763200. Its totient is φ = 4338432.

The previous prime is 6722899. The next prime is 6722909. The reversal of 6722905 is 5092276.

It is not a de Polignac number, because 6722905 - 2⁹ = 6722393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6722909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5055 + ... + 6244.

It is an arithmetic number, because the mean of its divisors is an integer number (610200).

Almost surely, 2^6722905 is an apocalyptic number.

It is an amenable number.

6722905 is a deficient number, since it is larger than the sum of its proper divisors (3040295).

6722905 is a wasteful number, since it uses less digits than its factorization.

6722905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11328.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 6722905 is about 2592.8565328610. The cubic root of 6722905 is about 188.7349475592.

The spelling of 6722905 in words is "six million, seven hundred twenty-two thousand, nine hundred five".