7161845 has 16 divisors (see below), whose sum is σ = 9195120. Its totient is φ = 5336064.

The previous prime is 7161823. The next prime is 7161851. The reversal of 7161845 is 5481617.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 54289 + 7107556 = 233^2 + 2666^2 .

It is a cyclic number.

It is not a de Polignac number, because 7161845 - 2¹⁰ = 7160821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8879 + ... + 9651.

It is an arithmetic number, because the mean of its divisors is an integer number (574695).

Almost surely, 2^7161845 is an apocalyptic number.

It is an amenable number.

7161845 is a deficient number, since it is larger than the sum of its proper divisors (2033275).

7161845 is a wasteful number, since it uses less digits than its factorization.

7161845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its digits is 6720, while the sum is 32.

The square root of 7161845 is about 2676.1623642821. The cubic root of 7161845 is about 192.7561777350.

It can be divided in two parts, 71 and 61845, that added together give a palindrome (61916).

The spelling of 7161845 in words is "seven million, one hundred sixty-one thousand, eight hundred forty-five".