6945155 has 16 divisors (see below), whose sum is σ = 9683904. Its totient is φ = 4682880.

The previous prime is 6945139. The next prime is 6945161. The reversal of 6945155 is 5515496.

6945155 = T₄₁₀ + T₄₁₁ + ... + T₄₇₉.

It is not a de Polignac number, because 6945155 - 2⁴ = 6945139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 509 + ... + 3761.

It is an arithmetic number, because the mean of its divisors is an integer number (605244).

Almost surely, 2^6945155 is an apocalyptic number.

6945155 is a deficient number, since it is larger than the sum of its proper divisors (2738749).

6945155 is a wasteful number, since it uses less digits than its factorization.

6945155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326.

The product of its digits is 27000, while the sum is 35.

The square root of 6945155 is about 2635.3661984627. The cubic root of 6945155 is about 190.7922139348.

The spelling of 6945155 in words is "six million, nine hundred forty-five thousand, one hundred fifty-five".