6722155 has 24 divisors (see below), whose sum is σ = 9116352. Its totient is φ = 4752000.

The previous prime is 6722153. The next prime is 6722161. The reversal of 6722155 is 5512276.

It is not a de Polignac number, because 6722155 - 2¹ = 6722153 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6722153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24670 + ... + 24940.

It is an arithmetic number, because the mean of its divisors is an integer number (379848).

Almost surely, 2^6722155 is an apocalyptic number.

6722155 is a deficient number, since it is larger than the sum of its proper divisors (2394197).

6722155 is a wasteful number, since it uses less digits than its factorization.

6722155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 328 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 6722155 is about 2592.7119006939. The cubic root of 6722155 is about 188.7279289427.

It can be divided in two parts, 672215 and 5, that added together give a triangular number (672220 = T₁₁₅₉).

The spelling of 6722155 in words is "six million, seven hundred twenty-two thousand, one hundred fifty-five".