7561345 has 16 divisors (see below), whose sum is σ = 10482048. Its totient is φ = 5175040.

The previous prime is 7561331. The next prime is 7561349. The reversal of 7561345 is 5431657.

It is not a de Polignac number, because 7561345 - 2¹¹ = 7559297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7561349) 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, 3109 + ... + 4978.

It is an arithmetic number, because the mean of its divisors is an integer number (655128).

Almost surely, 2^7561345 is an apocalyptic number.

It is an amenable number.

7561345 is a deficient number, since it is larger than the sum of its proper divisors (2920703).

7561345 is a wasteful number, since it uses less digits than its factorization.

7561345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8120.

The product of its digits is 12600, while the sum is 31.

The square root of 7561345 is about 2749.7899919812. The cubic root of 7561345 is about 196.2756170328.

The spelling of 7561345 in words is "seven million, five hundred sixty-one thousand, three hundred forty-five".