7040561 has 16 divisors (see below), whose sum is σ = 8019648. Its totient is φ = 6124800.

The previous prime is 7040557. The next prime is 7040563. The reversal of 7040561 is 1650407.

It is not a de Polignac number, because 7040561 - 2² = 7040557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7040563) by changing a digit.

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, 30101 + ... + 30333.

It is an arithmetic number, because the mean of its divisors is an integer number (501228).

Almost surely, 2^7040561 is an apocalyptic number.

It is an amenable number.

7040561 is a deficient number, since it is larger than the sum of its proper divisors (979087).

7040561 is a wasteful number, since it uses less digits than its factorization.

7040561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 7040561 is about 2653.4055475935. The cubic root of 7040561 is about 191.6618850309.

Adding to 7040561 its reverse (1650407), we get a palindrome (8690968).

The spelling of 7040561 in words is "seven million, forty thousand, five hundred sixty-one".